1004 NERITA. 



equally broad, with a lateral depressed spire, and nearly glo- 

 bular ; it has about twenty unequal ribs, which are crossed 

 with minute striae ; the outer lip has the outer margin very 

 slightly crenated, and is striated within ; the inner lip is flat- 

 tish, wrinkled, and tuberculated, and has two or three teeth 

 on the margin ; the colour is white or yellow, with black 

 spots, and undulated longitudinal stripes. 



STELLA. 58. Shell sub-globular, transversely rib- 

 bed, with the summit obtuse and radiated ; 

 lips denticulated. 



Nerita Stella. Chemnitz, xi. p. 174. t. 197. f. 1907 and 

 1908. 



Inhabits the East Indian Seas. Chemnitz. 



This shell appears by the figures to be about three-quarters of 

 an inch in diameter, and nearly globular, with the summit 

 very obtuse ; the colour is dark red with black spots, and 

 the summit radiated with black ; the operculum is said to 

 be covered w ith elevated dots, which is also the case in seve- 

 ral other species. 



LNDATA. 59. Shell with about thirty transverse 

 ribs, and the spire acute; lips toothed, and 

 the inner one wrinkled and tuberculated. 



Nerita undata. Linneeits Syst. Nat. p. 1255. Born Mus, 

 p. 408.? Chemnitz, v. p. 292. t. I90. f. 1950 and 1951. 

 Schroeter EijiL ii. p. 302. Gmelin, p. 3682. Schreibers 

 Conch, i. p. 328. 

 Nerita Promontorii. Gmelin, p. 3686. 

 Le Legar. Adanson Senegal, p. 19 i. t. 13. f. 3. 

 Bonanni Rec. and Kirch. 3. f. 215. Lister Conch, t. 596. 

 f. 7. GuaJter, t. 66. f. P. , 

 Inhabits the East Indian Seas. Chemnitz. Between Cape 



Manuel and Cape Verd, on the coast of Africa. Adanson. 

 Linnseus, in the Systema Naturae, for this species has quoted 

 Rumphius, t. 22. f. 4, and Gualter, t. 66. f, X, neither of 

 which answer the description given in his account of the 

 Museum of the Queen of Sweden, and the former is more 

 like N. Pica, and the latter N. Chatnceleon. The shell is 

 about an inch long and nearly equally broad, of a yellowish 

 grey colour, with black or dark brown broad longitudinal 

 confluent stripes ; the margin of the outer lip is crenated, 

 and the inner margin is crenulated by striae, which are formed 

 into teeth at the extremities j the inner lip is somewhat con- 



