446 



FISSURELLID^. 



crassa, Lam. 

 crenifera, Soiv. 

 Cumingii, Reeve. 

 D&Yw'mu, Reeve. 

 exquisita, Reeve, 

 galeviculum, Reeve. 

 grandis, Sow. 

 grisea, Reeve. 

 Houdurasensis, Reeve. 

 lata, Sow. 



latimarginata, Sow. 

 limbata, iSoic. 

 maxima, Soiv. 

 Mexicaua, Sow. 



nuitabilis. Sow. 

 nigra, Less. 

 iiimbosa, Linn. 

 oriens, Soiv. 

 Philippiaua, Reeve. 

 picta, Gmel. 

 pulchra, Sow. 

 radiosa, Less. 

 rota, Reeve. 

 rudis, Desh. 

 sagittifera. Reeve. 

 stellata. Reeve. 

 virescens, Sow. 



Sub-gen. cbemides, H. and A. Adams. 



Shell conical, surface rough, muricated or cancellated ; aper- 

 ture with the margin denticulated. 



alabastrites. Reeve. 

 asperelhi, Sow. 

 balanoides, Reeve. 

 Barbadensis, Gmel. 

 coarctata. King. 

 compressa. Reeve. 

 conoides, Reeve. 

 edititia. Reeve. 

 glaucopis, Reeve. 

 Humphreyi, Reeve. 

 macrotrema, Sow. 

 microtrema, Sow. 



muricata. Reeve. 

 Natalensis, Krauss. 

 nigro-punctata, Sow. 

 nodosa, Born. 

 obscura, Sow. 

 obtusa, Soiv. 

 olivacea. Gray. 

 ostrina. Reeve. 

 Peruviana, Lam. 

 rugosa, Sow. 

 Tongana, Quoij. 

 volcano, Reeve. 



Sub-gen. fissukidea, Swainson. 



Shell sub-conical, cap-shaped, the apex close to the posterior 

 margin ; perforation narrow. 



pileus, Swains, (pileopsoidcs. Reeve). 



