NEKITA.— Plate XVIII. 



spots, reminding one of the IleVwl 

 cherrinw. 



Tanliervilii or 2>"l- 



!:?pecies 81. (Mus. Cuming.) 

 Nerita affinis. Ner. tesid ovato-turl'maid, spim valdi 

 exiertd, anfractibus siiperne coucavis, deinde rotun- 

 datis, mhangudk, versus aperturam contractu, spira- 

 liter subobsolete liratis, aperturd parvd, columella de- 

 clivi, edentulatd ; grheo-albd, candeo-nigro obscure 

 drigatd. 



The allied Nekite. Sliell ovately turbinated, spire 

 much exserted, whorls concave round the upper 

 part, then rounded, rather narrow, contracted to- 

 wards the aperture, spirally rather obsoletely ridged, 

 aperture small, columella slanting, edentulate ; grey- 

 ish-white, faintly streaked with blue-black. 



IM. •? 



Of the same peculiar contracted turbinated type as the 

 preceding species, fiiiutly ridged, and grey-mottled. 



