Of the many living Gasteropoda taken in this region, very few are new species.
"Voyage Of H.M.S. Rattlesnake, Vol. 2 (of 2)" by John MacGillivray
CLASS V. GASTEROPODA ("Univalves").
"The Ancient Life History of the Earth" by Henry Alleyne Nicholson
In the next higher class of the Gasteropoda, or marine univalve shells, the sexes are either united or separate.
"The Descent of Man and Selection in Relation to Sex, Vol. I (1st edition)" by Charles Darwin
SHELLS, difference in form of, in male and female Gasteropoda, i.
"The Descent of Man and Selection in Relation to Sex" by Charles Darwin
The Brachiopoda are still interposed between the Conchifera and Gasteropoda.
"British Quarterly Review, American Edition, Volume LIV" by Various
Gasteropoda, classification of, 29.
"Stories of the Universe: Animal Life" by B. Lindsay
I may notice here two other land shells, although they scientifically are grouped amongst the fluviatile Gasteropoda.
"Our British Snails" by John William Horsley