

<&Jj> rW^MS.TESTACEA. 82. Nerita./r— *jr- ftr*^ 



Ci Imperforate^ with the lips tootjh^.^^j^-i^-- ^Z& \ 



dlifira. Shell fmooth, coarfe, wi:h an excavated < 





WOR 



\&& 



Pulli^era^^dY&ioot^T coarfe, wi:if an excavated eye-like fmali 

 fpire : inner-lip fmooth, crenulated. 



Lister, tab. l^.y/SebaMuf. 3. /, 41. f. 21 ^-z6. 



Rump/. Muf. tabj_22±M* Peti<v. Gaz, t ^ \u f. 4. *j&d&S&&-A 



Gualt. tell. f«^ i _4i_H.H2_ Knorr Vergn. 6. /• 13./- 3. 



jB^« Ma/. C^/: PW. tejl. tab. 1 7. /: 9, IO. ^^ ?J - 2 a 1 ,« f 



Chemn. conch. 9. tab. I 24./, 1078, 1079. f*<******. <*i 2> '* 



Inhabits rivers of India: 14—16 lines long. 



Shell hard, very finely ftriatc tranfve.rfely, pellucid, black or 

 brownifh or reddiih: nvhorls 2, one very large and terminat- 

 ing in an acute tooth: throat glabrous, polilhed, with a fine 

 blue or whitiih bottom, near the margin a broad fulvous 

 >- band: inner-lip afcendjng, glofiy. ,~^ ^^^^J^^^nL 



Undulata. Shell thin, imooth, undulate: crown ohtuie: outer-lip *7?^fam 

 fubftriate and toothlefs, inner-one a little denticulate.^f^^ 

 Inhabits India. r Chemn* conch, c, t.lQl.f. 1970, l,g7U^^'$^^?Sj 



Aterrima. Shell thick, opajke, globular, deep black with coloured : 

 /^^ li nes w ithin white: 



tuberculate, wrinkled 



outer-lip glabrous, inner.dip<^ v£ ^ 





<t*~~zxx% 



Chemn- conch. 5. ta£. 192. ;%, 1985, 1986. rH** &*J* ■*'- 



Inhabits Shell vzty minutely llriate. +?^^J&J?~~^£&*A 



Larva, Shell fmooth, fubglobular, white with yellowim-brown 

 bands : crown obtufe : lip (lightly denticulate. 

 Rumpf. Muf. tab, 22. Jzg-. 6. 

 Chemn., conch. 5. ta£. 193. y. 201 7. 

 Inhabits Amboinai very rare: middle-fized. 



P#/tf, Shell fmooth, roundifh, milk-white, with tranfverfe pa- 

 rallel black ftrias on the whorls. 

 Inhabits Lip flat, with hardly vifible teeth. 



Bidens* Shell fmooth : inner-lip 2- toothed. *^f^^ C^^l^^^^L^^^^ 1 

 Chemn, conch* 10. r^. 16^. Jig. 1594, I ^95! ^rw«^ v^fe- ~/~+JS*$' 



Inhabits S^// fize of a pea, black or reddifh, obioletely 7 ^^^ 



ftriate, fometimes pale yellow with whitiih clouds and 3^5^*' 



Firidis, Shell fmooth, green : inner-lip crenulate in the middle. 



Schrat.fiujconch. tab. 5. fig. 11. a, b. 



Chemn, conch 9. tab. \2\.fig* 1089.^5-iTr h,4. / tfr 1 . 



Inhabits 



