STROMBIDA. 189 
13. Asperi. (Hermes and Cylinder in part.) (. asper, Lam. 
14, Terebri. (Hermes.) (C. terebra, Born. 
15. Bulbi. C. bulbus, Reeve. 
16. Tulip. (Nubecula,and Phasmoconus in part.) C. tulipa, 
Linn. 
17. Texti. (Cylinder.)  C. teatile, Linn. 
Famity STROMBID A. 
Shell with an expanded lip, deeply notched near the canal. 
Operculum claw-shaped, serrated on the outer edge. 
Animal furnished with large eyes, placed on thick pedicels; 
tentacles slender, rising from the middle of the eye-pedicels. 
Foot narrow, ill-adapted for creeping. Lingual teeth single; 
uncini, three on each side (xi, 28). 
Strombus gigas (lix, 56) is occasionally used as an article of 
diet ; it sometimes produces pearls; and the layers composing the 
shell being of different colors, it is extensively used in carving 
cameos. It is also ground to powder for the manufacture of the 
finer kinds of porcelain, 300,000 having been imported into 
Liverpool from the Bahamas Islands in one year, and used 
chiefly for this purpose. 
The perfect development of the large, fine, pedunculated eyes 
of Strombus, together with its very elongated, powerful, mus- 
cular body and foot, and claw-shaped, stout, jagged, horny oper- 
culum, constitute it one of the most active and intelligent of 
mollusks. It is, in fact, a most sprightly and energetic animal, 
making extraordinary leaps in its endeavors to escape from 
confinement, planting firmly its powerful narrow operculum 
against any resisting surface, insinuating it under the edge of 
its shell, and, by a vigorous effort, throwing itself forwards, 
carrying its great heavy shell with it, and rolling along in a 
series of jumps in a most singular and grotesque manner.—A. 
ApaAms, Voy. Samarang, ii, 493. 
StrRoMBus, Linn. 
Ltym.—Strombos, a top. Syn.—Pyramis, Bolt. 
Disir.—66 sp. W. Indies, Medit., Red Sea, Ind. O., China, 
N. Zeal., Polynesia, W. tropical Am. Occurring on reefs, at 
low-water, and to 10 fms. Fossil, a few species. Cretaceous—. 
S. gigas, Linn. (lix, 56, 57). 
Shell ovate, turreted or subfusiform; aperture narrow, elongate, 
emarginate or with a short canal in front, canaliculated posteri- 
orly ; outer lip often lobed and with a deep notch in front near 
the canal. In the young the lip is not expanded, and the shell 
looks like a Conus. 
MONODACTYLUS (Klein), H. and A. Adams. Outer lip with a 
posterior much produced lobe. S. Pacificus, Swains. (lix, 58). 
