GASTEROPODA. 
Shell carinated, upper surface rugose, epidermis thin; callous 
beneath, shining; columella with one tooth or fold; lamelli- 
ferous on both sides of the aperture; peristome straight, slightly 
thickened. 
“The lingual membrane of C: Salleana, Cuming, is broad, 
elongate, with numerous longitudinal series of teeth. Teeth 
00°5°1°5°00; the central tooth (0, Fig. 17) oblong, distinct, with 
Fig. 17. 
a broad simple reflexed tip; the first and second lateral teeth 
(1 and 2) rather broader than the central one, with a three- 
toothed recurved tip; the third (3) narrow, elongate, with a 
shghtly recurved end; the fourth and fifth (4 and 5) much 
larger, oblong, and irregular shaped; the fourth about half as 
wide as the fifth, with three or four dentations on the inner side 
of the upper edge; the fifth very large, broad, with a large 
subcentral reflexed lobe; the lateral teeth are very numerous, 
subequal, similar, compressed, transparent, with a recurved 
tip, those of the inner teeth of the series being bifid.” —(Gray.) 
Distribution, 2 species. Mexico. 
PROSERPINA, Gray, 1840.* 
Etymology, Proserpina, the daughter of Ceres. 
Type, P. nitida, Gray. 
Synonym, Odontostoma, D’Orbigny. 
Shell globose or depressed, smooth, shining; columella with 
one fold; body of the penultimate whorl provided with one 
or many spiral plaits, or wanting; aperture lunate, contracted 
often by palatal laminz ; peristome thin, straight. 
P. Swiftii has the columella fold only, and is the sole repre- 
sentative of the family at present known to inhabit South 
America. 
Distribution, 7 species. Cuba, Jamaica, Venezuela. 
* See p. 289. 
D ay 
