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This insect is easily identified by the vaguely human skull-shaped pattern of markings on the thorax.

Death's-Head Hawkmoth

This insect is easily identified by the vaguely human skull-shaped pattern of markings on the thorax.

The head is the part of the body that contains the brain and the organs of the special senses.

Head

The head is the part of the body that contains the brain and the organs of the special senses.

Section of head and neck from front to back. Labels: 1, windpipe; 2, larynx; 3, spinal marrow; 4, pharynx; 5, tongue or hyoid bone; 6, epiglottis; 7, tongue; 8, hard palate; 9, soft palate; 10; bridge of the nose; 11, frontal cavity; 12; sphenoid cavity; 13, nasal cavity; 14, skin of skull; 15, bony skull; 16, hypophisis; 17, corpus callosum; 18, septum lucidum; 19, straight sinus; 20, cerebellum; 21 cerebrum; 22, lobes of medulla; 23, pons varolii; 24, medulla oblongata; 25, zone of the epistropheus; 26, vertebrae; 27, spinal continuation of the vertebrae.

Section of the Head and Neck

Section of head and neck from front to back. Labels: 1, windpipe; 2, larynx; 3, spinal marrow; 4, pharynx;…

Exposure of the Gasserian ganglion and middle meningeal artery though a flap incision of the scalp and skull. The dura mater and brain are retracted upwards. The (*) points to the Foramen spinosum through which the middle meningeal artery passes as it enters the cranial cavity.

Incision of the Head Showing Gasserian Ganglion

Exposure of the Gasserian ganglion and middle meningeal artery though a flap incision of the scalp and…

Bones of the head.

Bones of the Head

Bones of the head.

A diagram of the bones of the head. Label: 1, frontal lobe; 2, parietal bone; 3, temporal bone; 4, occipital bone; 5, nasal bone; 6, malar bone; 7, upper jaw; 8, os unguis; 9, lower jaw.

Bones of the Head

A diagram of the bones of the head. Label: 1, frontal lobe; 2, parietal bone; 3, temporal bone; 4, occipital…

The frontal view of a human face.

Human Head

The frontal view of a human face.

The rear view of a human face.

Human Head

The rear view of a human face.

"Side view of skull of horse, with the bone removed so as to expose the whole of the teeth. PMx, premaxilla; Mx, maxilla; Na, nasal bone; Ma, malar bone; L, lacrymal bone; Fr, frontal bone; Sq, squamosal bone; Pa, parietal bone; oc, occipital condyle; pp, paroccipital process; i, the three incisor teeth; c, the canine tooth; pm1, the situation of the rudimentary first premolar, which has been lost in the lower, but is present in the upper jaw; pm2, pm3, and pm4, the three fully-developed premolar teeth; m, the three true molar teeth." — Encyclopedia Britannica, 1893

Horse Skull

"Side view of skull of horse, with the bone removed so as to expose the whole of the teeth. PMx, premaxilla;…

"Side views of skull and hyoid bone of Howling Money." — Encyclopedia Britanica, 1893

Howling Monkey Skull

"Side views of skull and hyoid bone of Howling Money." — Encyclopedia Britanica, 1893

A human skeleton.

Human skeleton

A human skeleton.

Showing the brain cavity of a human.

Human skull

Showing the brain cavity of a human.

"Skull of Hydrochaerus Capybara." —The Encyclopedia Britannica, 1903

Hydrochaerus Capybara

"Skull of Hydrochaerus Capybara." —The Encyclopedia Britannica, 1903

"Skull of Hydropotes inermis (adult male), a deer without antlers, but with largely-developed upper canine teeth." —The Encyclopedia Britannica, 1903

Hydropotes Inermis

"Skull of Hydropotes inermis (adult male), a deer without antlers, but with largely-developed upper…

"Skull of Hystrix Eristata. t, temporal muscle; m, masseter. m', portion of masseter transmitted through the infra-orbital foramen, the superior maxillary nerve passing outwards between it and the maxillary bone." —The Encyclopedia Britannica, 1903

Hystrix Eristata

"Skull of Hystrix Eristata. t, temporal muscle; m, masseter. m', portion of masseter transmitted through…

Two skullcaps used for defense of the head in the 16th century. The caps fit closely to the head. The cap on the left appears to be cloth lined with an iron frame. The cap on the right consists only of the iron frame. Both caps are from the 16th century.

Iron Skullcaps from the 16th Century

Two skullcaps used for defense of the head in the 16th century. The caps fit closely to the head. The…

"Terrestril Rodents, with imperfect clavicles, elongated hind limbs, short recurved tail, and long ears. Skull compressed, frontals with large wing-shaped post-orbital processes; molars as in Lagomyidae." —The Encyclopedia Britannica, 1903

Lepus Timidus

"Terrestril Rodents, with imperfect clavicles, elongated hind limbs, short recurved tail, and long ears.…

"The internal structure of the lion, except in slight details, resembles that of the other Felidae, the whole organization being that of an animal modified to fulfil, in the most perfect degree yet attained, an active, predaceous mode of existence." —The Encyclopedia Britannica, 1910

Lion Skull

"The internal structure of the lion, except in slight details, resembles that of the other Felidae,…

Saint Matthew sitting an a cloth-covered table writing the Gospel. The Holy Spirit, represented as a dove, hovers over his shoulder. Books and a human skull rest on the table. The skull, presumably, is a reference to man, the Evangelist's traditional symbol.

Saint Matthew Writing

Saint Matthew sitting an a cloth-covered table writing the Gospel. The Holy Spirit, represented as a…

Superior maxillary bone and the bony sinuses of the head.

Superior Maxillary Bone and Sinuses

Superior maxillary bone and the bony sinuses of the head.

An illustration of five men sitting around table holding torches.

Men Sitting at Table

An illustration of five men sitting around table holding torches.

A large moth named for the skull-like image upon its thorax.

Death's Head Moth

A large moth named for the skull-like image upon its thorax.

The inner wall of the nasal fossae, or septum of the nose.

Nasal Fossae

The inner wall of the nasal fossae, or septum of the nose.

The occipital bone, viewed from above.

Occipital Bone

The occipital bone, viewed from above.

The inner surface of the occipital bone.

Occipital Bone

The inner surface of the occipital bone.

Occipital bone at birth.

Occipital Bone at Birth

Occipital bone at birth.

Occipital bone of the human skull, inner surface. It is situated at the back and base of the skull. Labels: 9,9, and 10,10, depression for reception of lobes of brain; 11, foramen magnum.

Occipital Bone of the Human Skull

Occipital bone of the human skull, inner surface. It is situated at the back and base of the skull.…

Development of occipital bone. From seven centers.

Development of Occipital Bone

Development of occipital bone. From seven centers.

The inner surface of the right occipital bone.

Inner Surface of the Occipital Bone

The inner surface of the right occipital bone.

Occipital bone, internal surface, from before.

Internal Surface of the Occipital Bone

Occipital bone, internal surface, from before.

"The side view of the skull of an adult Orang" — Encyclopedia Britanica, 1893

Orangutang Skull

"The side view of the skull of an adult Orang" — Encyclopedia Britanica, 1893

"Skull and Dentition of Otaria Forsteri." —The Encyclopedia Britannica, 1903

Otaria Forsteri

"Skull and Dentition of Otaria Forsteri." —The Encyclopedia Britannica, 1903

"Skull of <i>Spatularia</i>, with the long beak removed, the anterior (asc) and posterior (psc) semicircular canals exposed; Au, auditory chamber; Or, orbit of eye; N, nasal sac; Hy, hyoidean apparatus; Er, representatives of branchiostegal rays; Op, operculum; Mn, mandible; A, B, suspensorium; D, palatoquadrate cartilage; E, maxilla." &mdash;Whitney, 1889 <p>Illustration of the exposed and labeled skull of a paddle-fish with the long beak removed.

The Skull of a Paddle-Fish with the Beak Removed

"Skull of Spatularia, with the long beak removed, the anterior (asc) and posterior (psc) semicircular…

Parietal bone of the human skull, inner surface. The parietal bones form the greater part of the sides and roof of the skull. Labels: A, parietal depression; E, furrow for ramification of arteries.

Parietal Bone of the Human Skull

Parietal bone of the human skull, inner surface. The parietal bones form the greater part of the sides…

Right parietal bone, inner surface.

Inner Surface of the Parietal Bone

Right parietal bone, inner surface.

The inner surface of the right parietal bone.

Inner Surface of the Parietal Bone

The inner surface of the right parietal bone.

Right parietal bone, outer surface.

Outer Surface of the Parietal Bone

Right parietal bone, outer surface.

The outer side of the right parietal bone.

Outer Surface of the Parietal Bone

The outer side of the right parietal bone.

"Skeleton of the Perch's Skull." &mdash; Encyclopedia Britannica, 1893

Perch Skull

"Skeleton of the Perch's Skull." — Encyclopedia Britannica, 1893

"Lower view of skull of perch." &mdash; Encyclopedia Britannica, 1893

Perch Skull

"Lower view of skull of perch." — Encyclopedia Britannica, 1893

"Skull of Polyodon. n, nasal cavity; sq, squamosal; mh, hyomandibular; sy, symplectic; pa, palate-pterygold; m, Meckelian cartiledge; mx, maxillary; d, dentary; h, hyoid; op, operculum; br, branchiostergal; s.cl, supraclavicular; p.cl, postclavicular; cl, clavicle; i.cl, infraclavicular." &mdash; Encyclopedia Britannica, 1893

Polyodon

"Skull of Polyodon. n, nasal cavity; sq, squamosal; mh, hyomandibular; sy, symplectic; pa, palate-pterygold;…

"Upper aspect of the primordial cranium, with the membrane-bones removed. An, angular; ao, anteorbital; Ar, articulary; B, basal; D, dentary; E, ethmoid; F, frontal; Ma, mastoid; Mp, metapterygold; Mx, maxillary; N, nasal; O, operculum; Oc, occipital; Pa, parietal; Pl, palatine; Pmx, premaxillary; po, postorbital; Prf, prefrontal; Pt, post-temporals; Ptf, postfrontal; Ptr, pterygold; Q, quadrate; S, suspensorium; So, suboperculum; Sp, sphenold; Spl, splenial; St, supratemporals; T, tympanic lamina; Tu, turbinal; v, vomer; x x, small ossicles; x' x', spiraculars." &mdash; Encyclopedia Britannica, 1893

Polypterus Skull

"Upper aspect of the primordial cranium, with the membrane-bones removed. An, angular; ao, anteorbital;…

"Lower aspect of the primordial cranium, with the membrane-bones removed. An, angular; ao, anteorbital; Ar, articulary; B, basal; D, dentary; E, ethmoid; F, frontal; Ma, mastoid; Mp, metapterygold; Mx, maxillary; N, nasal; O, operculum; Oc, occipital; Pa, parietal; Pl, palatine; Pmx, premaxillary; po, postorbital; Prf, prefrontal; Pt, post-temporals; Ptf, postfrontal; Ptr, pterygold; Q, quadrate; S, suspensorium; So, suboperculum; Sp, sphenold; Spl, splenial; St, supratemporals; T, tympanic lamina; Tu, turbinal; v, vomer; x x, small ossicles; x' x', spiraculars." &mdash; Encyclopedia Britannica, 1893

Polypterus Skull

"Lower aspect of the primordial cranium, with the membrane-bones removed. An, angular; ao, anteorbital;…

"Side view, with the membrane-bones. An, angular; ao, anteorbital; Ar, articulary; B, basal; D, dentary; E, ethmoid; F, frontal; Ma, mastoid; Mp, metapterygold; Mx, maxillary; N, nasal; O, operculum; Oc, occipital; Pa, parietal; Pl, palatine; Pmx, premaxillary; po, postorbital; Prf, prefrontal; Pt, post-temporals; Ptf, postfrontal; Ptr, pterygold; Q, quadrate; S, suspensorium; So, suboperculum; Sp, sphenold; Spl, splenial; St, supratemporals; T, tympanic lamina; Tu, turbinal; v, vomer; x x, small ossicles; x' x', spiraculars." &mdash; Encyclopedia Britannica, 1893

Polypterus Skull

"Side view, with the membrane-bones. An, angular; ao, anteorbital; Ar, articulary; B, basal; D, dentary;…

"Lower aspect of the skull, part of the bones being removed on the side. An, angular; ao, anteorbital; Ar, articulary; B, basal; D, dentary; E, ethmoid; F, frontal; Ma, mastoid; Mp, metapterygold; Mx, maxillary; N, nasal; O, operculum; Oc, occipital; Pa, parietal; Pl, palatine; Pmx, premaxillary; po, postorbital; Prf, prefrontal; Pt, post-temporals; Ptf, postfrontal; Ptr, pterygold; Q, quadrate; S, suspensorium; So, suboperculum; Sp, sphenold; Spl, splenial; St, supratemporals; T, tympanic lamina; Tu, turbinal; v, vomer; x x, small ossicles; x' x', spiraculars." &mdash; Encyclopedia Britannica, 1893

Polypterus Skull

"Lower aspect of the skull, part of the bones being removed on the side. An, angular; ao, anteorbital;…

"Skull and Dentition of Proteles cristatus." &mdash;The Encyclopedia Britannica, 1903

Proteles Cristatus

"Skull and Dentition of Proteles cristatus." —The Encyclopedia Britannica, 1903

"Skull of Rhinopoma Microphyllum." &mdash;The Encyclopedia Britannica, 1903

Rhinopoma Microphyllum

"Skull of Rhinopoma Microphyllum." —The Encyclopedia Britannica, 1903

The skull of a serpent with visible teeth.

Serpent Skull

The skull of a serpent with visible teeth.

The human skeleton.

Human Skeleton

The human skeleton.

Human skeleton standing upright.

Human Skeleton

Human skeleton standing upright.

"In the other forms the number (vertebrae) varies between twenty and thirty three, the latter being spider monkeys. The proportion in the spider monkeys of the genus Ateles, almost three to one; in the other longest&mdash;tailed genera it is rarely so large as two to one." &mdash;Encyclopaedia Britannica, 1910

Side View of Skeleton of South American Spider Monkey

"In the other forms the number (vertebrae) varies between twenty and thirty three, the latter being…

Picture of the skull, showing the hole which the backbone connects to the base of the skull.

Skull

Picture of the skull, showing the hole which the backbone connects to the base of the skull.

This illustration shows the base of the skull. The inner or cerebal surface.

Skull

This illustration shows the base of the skull. The inner or cerebal surface.

This illustration shows the external surface of the skull.

Skull

This illustration shows the external surface of the skull.

This illustration shows the anterolateral region of the skull.

Skull

This illustration shows the anterolateral region of the skull.

The coronal section through the frontal sinus and nasal fossa.

Skull

The coronal section through the frontal sinus and nasal fossa.

The human skull.

Skull

The human skull.

A side-view of the skull.

Skull

A side-view of the skull.

A front-view of the skull.

Skull

A front-view of the skull.

A side view of the skull. Labels: O, occipital bone; T, temporal bone; Pr, parietal bone; F, frontal bone; S, sphenoid; Z, malar; Mx, maxilla; N, nasal; E, ethmoid; L, lachrymal; Md, inferior maxilla.

The Skull

A side view of the skull. Labels: O, occipital bone; T, temporal bone; Pr, parietal bone; F, frontal…