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Worms |
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Acanthobdella An illustration of a Acanthobdella, a member of the annelid family.... |
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Acanthobdella, Sectional View of An illustration of a sectional view of a Acanthobdella, a member of the annelid family. "c, Coelom; c.ch, Coelomic epithelium (yellow cells); cg, glandular cells; cl, Muscle cells of lateral line; cp... |
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Amphitrite Ornata Amphitrite ornata.... |
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Animalcule, wheel "These animals [the Rotifera], called Wheel Animalcules, were formerly included among the Infusoria, but are now classed with the Articulata: they are chiefly known to us by the microscope, the... |
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Annelid This diagram shows a fresh-water annelid. a, appendages; br., brain; d, dissepiments; i, intestine; m, mouth; nph, nephridium; oe, aesophagus; p, pavilion, line with ciliated entoderm; ph., pharynx; p... |
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Annelid This diagram shows the longitudinal section of the anterior end of the annelid. A, sagittal section; B, frontal section to show anterior portion of nervous system. b, brain; co., nervous collar about ... |
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Annelid This diagram shows a transverse section of dero. c., caelom; c.l., cells of the so-called "lateral line"; d.m., dermo-muscular wall including muscles and skin; d.v., dorsal blood vessel; ect, ectoder... |
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Antennata, leodice "The Leodice antennata has the organs of locomotion attached to each segment; they are usually in the form of movable spines, and are used as oars." — Goodrich, 1859... |
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Arenicola "Cross-section of Arenicola. E., Epidermis; c.m., circular muscles; l.m., longitudinal muscles; b.c., body cavity; gl., gill; s., setae; n.p., nephridial pore; a.br., afferent branchial; e.br., effere... |
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Ascaris "Cross-section through Ascaris. d.n., Dorsal nerve; n.c., non-contractile portion of muscle cells; c., cuticle; e., epidermis; l.l., lateral line; e.v., excretory vessel; m., contractile portion of mu... |
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Balanoglossus "Male of Balanoglossus (Dolichoglossus) kowalevskii. Note anterior proboscis. Mo., Mouth; op., slight operculum behind the collar; then the region with gill-slits; ts., testes; a., anus." -Thomson, 19... |
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Bladder-Worms "Diagrams of bladder-worms. I. The ordinary Cysticercus type with one head (H.). II. The Coenurus type, with many heads. III. The Echinococcus type, with many heads, and with brood capsules producing ... |
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Blood Circulation This illustration shows a representation of the circulation of the blood, in its essential features. The arrows indicate the course of the blood. a, arteries; aur., auricle or receiving portion of the... |
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Bonellia Viridis (Female) Illustration of a female green spoonworm. A, Proboscis cut short; B, bristle passing though the mouth into the pharynx; C, coiled intestine; D, anal tufts or vesicles; E, ventral nerve cord; F, ovary ... |
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Bonellia Viridis (Male) Illustration of a male green spoonworm. A, Bonellia viridis; B, mouth; C, ventral hooks; and d, anus. The Green Spoonworm (Bonellia viridis) is a marine worm (phylum Echiura) noted for displaying exc... |
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Bonellia Viridis (Male) Illustration of a male green spoonworm. A, Generative pore with spermatozoa; B, Anterior blind end of intestine attached to the parenchymatous tissue by muscular strands; C, Green wandering cells cont... |
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Cestode "Bladderworm stage of a Cestode...a, Early stage with head inverted. b, Later stage with head everted." -Thomson, 1916... |
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Chaetognatha Chaetognatha is a phylum of predatory marine worms that are a major component of plankton worldwide. About 20% of the known species are benthic and can attach to algae or rocks. They are found in all ... |
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Contortuplicata, serpula "The Serpulae, which form irregularly twisted calcareous tubes, often grow together in large masses, generally attached to shells and similar objects; while those genera which, like the Tere... |
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Dasychone Infracta An illlustration of a dasychone infracta, a type of annelid. The annelids, collectively called Annelida (from Latin anellus "little ring"), are a large phylum of animals comprising the segmented wor... |
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Demoscolecida "Demoscolecida, a group of minute marine worm-like creatures. The body tapers towards each end and is marked by a number f well define ridges." -Britannica, 1910... |
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Earth-worms "The bodies of these animals are of a cylindrical form, somewhat pointed at the anterior extremity, and usually a little flattened at the tail. The skin is tough, and divided into numerous segments b... |
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Earthworm The earthworm works through the ground by insinuating its pointed head between the grains of dirt, (Hooker, 1882).... |
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Earthworm Side view of internal structures of earthworm.... |
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Earthworm Dorsal view of internal structures of earthworm after cutting through the dorsal wall lengthwise and turning it outward.... |
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