"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…
"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…
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…