152 liCiiMA, ir.s p/:<i!'LE A.xn rnnnrcTinxs. 



Famihj Strombidse. 



The Stromlis arc active and pi'edaceous oivatures, progressins; in a jerky fashion, 

 by successive leaps, wliieh they eliVct by placinp; tlie narrow part of tlie foot uurler 

 the shell, and then strai{:;htenina; it, so as to throw the slu^U suddenly forwards. 

 Their eyes arc well developed. The Sfromhiix gigas of the West Indies sometimes 

 I)roduces pink pearls, and its shell is largely used in the manufactui-e of cameos and 

 porcelain (Adams). 



*StK05IBUS GIBBEEFLrs, L. 

 *(il0X0D.\CTTLUs) LaMARCKII, SoW. 



M. Auris-diana, Eccve. 

 *(Gallinul.\) c.\n.\rium, L. 



* ,, conrsiBA, Lam. (Reeve). Andainans. 



*(STE03IBn)EA) BCLBrLFS, SoW. 



* ,, DEXTATUS, L. 



*Pteeoceras, Sowerliy. 



These shells are called 'spider claws ' or ' scorpions,' from the curved, digitated, 

 and channelled processes of the outer lip. In young shells the outer lip is simple, 

 but the 'claws' appear with age, as open canals, which afterwards become closed 

 and solid. 



* ,, LAMBIS, L. 



* ,, SCOEI'IO, L. 



EosTELLAEiA, Lamorck. 



Shell fusiform, spire elevated, and the mouth produced into a long beak. Outer 

 lip digitated. Operculum small. 



These shells are sometimes called ' spindle strombs,' from theii- shape. 



* ,, FUSUS, L. 



*(IIimella) cancellatus, Sow. Andamans. 



TEREBELLIN^. 



Teeebellfm, Klein. 



Tentacles none. Margin of shell acute, anteriorly truncate. 



* ,, sirBULATUM, Chem. 



One eye pedicle of this species is longer than the other, and can be advanced 

 telescopically tlirough the notch in front of the shell. It will then remain, with its 

 shell vertically poised, on the watch till assured of security, when it commences to 

 roll over and examine the ground \vith its rostrum (Adams). 



Famihj Cyprseidae. 



Teeth in seven series. Tentacles long, witli the eyes on tuberosities on their 

 external bases. JIantle furnished with a siphon, and large expanded side-lobes, which 

 envelope the shell. Operculum none. Shell usually polished. Lips toothed or 

 corrugated. In young shells the outer lip is sharp. The animal is shy and slow in 

 its movements. 



The ' cowries ' are mostly inhabitants of warm seas, and for beauty and variety 

 yield to no other family, their shells being lustrous and omameiital, and the animals, 

 as seen gliding in their native element, often singularly beautiful. 



*Cype^a asellus, L. 



*■ ,, TABEscENs, Solanclcr. 



* ,, iNTEEEurTA, Gray. 



* ,, FEii.vA, Grael. 



* ,, UIEUNDO, L. 



