MBLVILL— MARINE MOLLUSCA.. 89 



85 Cerithium •piperitnm., Sowb. 

 Loc. Ooetivy I. 



Seychelles : Praslin I. 



8G. Cerithium rostratum, Sowb. 

 Loc. Coetivy I. 



Seychelles : Praslin I. 



87. Cerithium {Vertagus) articulatum, Ad. & Reeve. 

 Loc. Chagos Archipelago. 



Amirantes : S. Joseph I. 

 By Tryon (Man. Conch, ix. p. 146) this Eastern species is consiclercd conspecific with 

 C. gemmatum. Hinds, from the West Coast of Central America. 



88. Cerithium {Vertagus) asperum (L.). 



Murex asper, Linnej Syst. Natur. xii. 1226. 

 Strombus vihe.r, Graelin, Syst. Natur. xiii. 3522. 

 Cerit/tmm Uneatum, Lamarck, Enc. i\I('th. t. 44.3. fig. 3«, b. 

 Clava rugata, Mart. Univ. Conch, t. 12. 



Loc. Chagos Archipelago : Diego Garcia, Barachois Mam-ice. 

 Seychelles : Praslin I. 

 Amirantes : S. Joseph I. 



89. Cerithium {Vertagus) cedo-nulli, Sowb. 

 Loc. Coetivy I. 



Distinct, in my opinion, from C. obeliscus. Brag., to which it is by some authors 

 united. A refined and beautiful species. 



90. Cerithium {Vertagus) fasciatum, Bvug. 

 Loc. Seychelles : Station E 2, 31 fathoms. 



The plain, unhanded form only. Includes the larger C. martiniannm, Pfr., occurrin"- 

 at Providence I., Station D 1, 31 fathoms. 



91. Cerithium {Vertagus) kochii, Phil. 



Loc. Cargados Carajos : Station B 13, 30 fathoms. 



Amirantes : Station E IS, 280 fathoms. 

 Very widely distributed throughout the Indian Ocean, but not yet recorded from 

 the Eastern Archipelago or Philippines. 



92. Cerithium {Vertagus) obeliscus, Brug. 

 Loc. Coetivy I. 



Seychelles : Station E 2, 31 fathoms, coral and other rubble. 

 Chagos Archipelago. 



SECOND SERIES. — ZOOLOGY, VOL. XIII. 12 



