UNIVALVES, NERIT4. 



131 



NERITA.-iVmVe or Hoof Shell 



C. Imperforated; lips toothed. 



PuUigera {Red N.) Bidens. 



Undulata. Viridis. 



Aterinia. Virginea {Guinea-ken N.) 



Larva. Polita {Polished N.) 



Pupa. Ve\oronta{Bl€eding tooth N. ) 

 K 2 



