GASTEROPODA. 233 
Shell yentricose, convolute, covered with shining enamel ; 
spire concealed; aperture long and 
narrow, with a short canal at each | 
end; inner lip crenulated; outer lip 
inflected and crenulated (lingual 
uncint similar). 
The young shell has a thin and £ 
sharp outer lip, a prominent spire, Ff: 
and is covered with a thin epidermis | : 
(Fig. 92). When full-grown the 
mantle lobes expand on each side, 
and deposit a shining enamel over 
the whole shell, by which the spire 
is entirely concealed. There is usually 
Fig. 92. Cyprea, % line of paler colour, which indicates 
young.* where the mantle lobes met. Cyprcea 
annulus is used by the Asiatic Islanders to adorn their Fig. 93. 
dress, to weight their fishing-nets, and for barter. 77“ 
Specimens of it were found by Dr. Layard in the ruins of 
Nimroud. The money-cowry (C. moneta) is also a native of the 
Pacific and Hastern seas; many tons weight of this little shell 
are annually imported into this country, and again exported 
for barter with the native tribes of Western Africa ; in the year 
1848 sixty tons of the money-cowry were imported into Liver- 
pool. Mr. Adams observed the pteropodous fry of C. annulus, 
at Singapore, adhering in masses to the mantle of the parent, 
or swimming in rapid gyrations, or with abrupt jerking moye- 
ments by means of their cephalic fins. 3 
Distribution, 150 species. In all warm seas (except east 
coast South America ?), but most abundant in those of the old 
world. On reefs and under rocks at low water. 
Fossil, 84 species. Chalk—. India, Britain, France, &c. 
Sub-genera. Cyprovula, Gray. C. Capensis, Pl. VII., Fig. 21. 
Apertural plaits continued regularly over the margin of the 
canal. 
LIuponia, Gray. OC. algoénsis, Pl. VII., Fig. 22. Inner lip 
irregularly plaited in front. 
Trivia, Gray. OC. europea, Pl. VIL, Fig. 23; Fig. 98, and 
15, B. Small shells with stric extending over the back. 
(Uncini: 1st denticulate, 2, 3, simple.) 
* Fig. 92. Cyprea testudinari, L., young, China. 
T Fig. 98. Trivia Europea, Mont. From the “ British Mollusca,” by Messrs, Forbes 
aud Hanley. 
