26 MOLLUSCA. TRACHELIPODA. 



nut brown ; whorls banded with white above ; columellar callosi- 

 ty reddish, somewhat striated. 1 inch long Ckem. x. pi. 147, 

 fig. 1381. 



A. marginata, Lam. Shell ovate, ventricose, orange red ; the spire 

 bluntish at the apex ; the columellar callosity white and smooth. 

 About 10 lines long Lam. vii. 413. 



Gen. 4. TEREBELLUM. Lam. 



Shell convolute, subcylindrical, pointed at the summit ; aperture 

 longitudinal, narrow above, notched at the base ; columella 

 smooth, truncate beneath. 



T. subulatum, Lam. Shell cylindrical, with the spire subulate, thin, 

 smooth, and glossy ; the outer lip adnate to the columella. Near- 

 ly 2 inches long. Indian Ocean. Lister, pi. 736, fig. 30. 



Gen. 5. CYPR^A, Lin. 



Shell ovate or oblong, convex, with the margins involute ; aper- 

 ture longitudinal, narrow, dentate on either side, effuse at 

 the extremities ; spire very small, scarcely apparent. 



The shells of this genus are distinguished, if not for elegance of form, yet for 

 beauty of colouring and richness of polish. This polish is preserved by the animal 

 while alive enveloping the shell in a membranous fold. The young shell presents the 

 appearance of an olive, having the spire acute, the outer lip sharp, and both lips desti- 

 tute of teeth. Many of the species which in their perfect state.are spotted, are when 

 young transversely banded. They are all, excepting one species, natives of the seas 

 of warm climates. Many of them are very highly prized by collectors. 



C. exanthema, Lin. Shell ovato-cylindrical, brown, with scattered 

 ocellate whitish spots ; the longitudinal line pale ; mouth bluish. 

 About 4 inches long. Inhabits the seas of the West Indies, &.c. 

 Bouan. iii. fig. 257, 266. 



C. Argus, Lin, Shell ovato-oblong, subcylindrical, yellowish brown, 

 with scattered brown ocelli, and marked beneath with four brown 

 spots. 4 inches long. Inhabits the Indian Ocean Lister, 

 pi. 705, fig. 54. 



C. mappa, Lin. Shell ovate, ventricose, whitish or pale brown ; 

 marked with brown lines resembling written characters ; longi- 

 tudinal line branched. 3 inches long. Inhabits the Indian seas. 

 D'Argenv. pi. 18, fig. B. 



C. aurora, Lin. Shell ovate, ventricose, subglobose, orange-co- 

 loured, without spots ; the mouth orange ; the sides white. 4 in- 

 ches long. Inhabits the seas of New Zealand. Lam. vii. 382. 

 This is one of the rarest and most valuable of the genus. 



C. tigris, Lin. Shell ovate, ventricose, whitish, with large dark 

 brown or blackish spots, and a ferruginous dorsal line ; white be- 

 low. 3 to 4 inches long. Indian seas Lister, pi. 682, fig. 29. 

 This is one of the most common, and at the same time one of the most beautiful 



species. It is frequently cut for snuff-boxes. 



C. moneta, Lin. Shell ovate, marginate, yellowish white, the mar- 



