NERITA. 983 



Inhabits the coasts of the West India Islands. Chemnitz. 



Shell about ten lines long, and equally broad, of a pale nut- 

 brown colour, with darker crowded longitudinal wrinkles ; 

 the inside is glabrous, and pale testaceous. 



MAROCCANA, 1.3. Shell sub-globular, slightly wrink- 

 led at the angle of the whirls, greenish, and 

 the inside brown ; umbilicus somewhat com- 

 pressed. 



Nerita Maroccana. Chemnitz, v. p. 270. 1. 188. f. 1905 to 



1910. U/i/sses's Travels, p. 474. 

 Nerita Marochiensis. Gmelin, p. 3673. Schreibers Conch. 



I p. 318. 

 Nerita, No. 13. Schroefer Eiiil. ii. p. 309. 



Inhabits the coasts of Africa, and the West Indies. Chemnitz. 

 Bay of Naples. V/i/sses. 



Shell about three-quarters of an inch or an inch long, and the 

 length rather exceeds the breadth ; the colour is greenish or 

 brownish olive, with darker longitudinal more or less undu- 

 lated stripes, and the summit livid or violet; the stripes are 

 sometimes interrupted so as to form transverse feathered 

 bands ; the spire is somewhat produced, and the summit 

 acute. 



ARACHNOIDEA. 14. Shell sub-globular, white with 

 reddish reticulated veins, and the summit 

 blackish; whirls convex, and the umbilicus 

 nearly closed. 



Nerita arachnoidea. Gmelin, p. 3674. Schreibers Conch. 



i. p. 319. 

 Nerita, No. l6. Schroder Einl. ii. p. 310. 

 Chemnitz, v. p. 271. t. 188. f. 1915 and I916. 



Inhabits 



This shell appears by the figures to be ten lines long and nine 

 broad ; and Gmelin doubts whether it is more than a Va- 

 riety of some one of the neighbouring species. 



VITTATA. 15. Shell sub-globular, brown with two 

 paler reticulated transverse bands, and their 

 margins sinuated. 



Nerita vittata. Gmelin, p. 3674. Schreibers Conch, i. p. 

 319. 



2 D 2 



