A skeleton of a tortoise The ribs of which are expanded, forming the dorsal part of its shell. Labels:…
A diagram of a mollusca. Mollusca are soft-bodied animals that are usually protected by an external…
This species is able to hollow out a home in a solid block of gneiss, one of the hardest rocks. To excavate…
This species is able to hollow out a home in a solid block of gneiss, one of the hardest rocks. To excavate…
This species is able to hollow out a home in a solid block of gneiss, one of the hardest rocks. To excavate…
This species is able to hollow out a home in a solid block of gneiss, one of the hardest rocks. To excavate…
It has received the strange name of the Watering-pot because of a convex disk that is pierced with holes…
"The familiar cockles are among the most widely distributed of shells. A species common to the Atlantic…
"The familiar cockles are among the most widely distributed of shells. An exotic species which inhabits…
"On the shores of the Mediterranean and along the Atlantic coast, species of the genus Pectunculus…
"Only six actually living species of the genus have been found; these inhabit the Indian Ocean, the…
"The genus Pinna was so called from its resemblance to the plumelet which the Roman soldiers…
"The Watered Pecten belongs to the scallop-shells. The shell is generally nearly circular, more or less…
"The Molluscous Gasteropoda have the organs of respiration formed for aerial respiration or for respiration…
"The Molluscous Gasteropoda have the organs of respiration formed for aerial respiration or for respiration…
"The animals have a well-developed shell, the form of which is elegant and delicate in structure. They…
"The animals have a well-developed shell, the form of which is elegant and delicate in structure. They…
"The animals have a well-developed shell, the form of which is elegant and delicate in structure. They…
A thin diaphanous shell in which species of the genus Limnaea live. They can be found in the fresh waters…
The shell of the Planorbis is thin, light and disk-like in form. The can creep along solid bodies, or…
"The snails are male and female in the same individual, or hermaphrodite. The Romans had many species…
"The snails are male and female in the same individual, or hermaphrodite. [This is] the favorite culinary…
"Ruby-eyed Limpet, from the Antilles. If the common Limpet is alarmed, no human force, pulling in a…
"The species of the genus Trochus are found in all seas, and near to the shore in the clefts…
"The species of the genus Trochus are found in all seas, and near to the shore in the clefts…
"The species of the genus Trochus are found in all seas, and near to the shore in the clefts…
"The species of the genus Trochus are found in all seas, and near to the shore in the clefts…
"The species of the genus Trochus are found in all seas, and near to the shore in the clefts…
"The species of the genus Trochus are found in all seas, and near to the shore in the clefts…
"A large thick and weighty shell, round-bellied and deeply furrowed; it is yellow, or rust-colored,…
"The Marbled Turbo is the largest shell in the group. It is marbled green, white and brown outside,…
This specimen comes from the Chinese seas. It is green on the outside, and brilliantly nacred within.
"The Monodonta are elegantly marked shells. Some curious specimens from this family come from…
"The Monodonta are elegantly marked shells. Some curious specimens from this family come from…
"The Monodonta are elegantly marked shells. Some curious specimens from this family come from…
"The Staircase-shell is recognized by its deep umbilicus, wide and funnel-shaped, in the interior of…
"The Staircase-shell is recognized by its deep umbilicus, wide and funnel-shaped, in the interior of…
"Some other species, the names of which indicate a winding pyramid, have shells terminating in a sharp…
"Some other species, the names of which indicate a winding pyramid, have shells terminating in a sharp…