MELVILL — MAEINE MOLLUSCA. 87 



71. Torinia infundibuliforiiils (Gmcl.). 

 Loc. Coetivy I. 



T. cylindracea, Hanley, is a synonym. 



72. Torinia oariegata (Gmel.). 

 Loc. Cliagos Archipelago. 



With this is grouped T. perspectlviimoula, Dillwyn. The two forms arc united by 

 intermediates. 



Family LittorinidaB. 



73. Littorina (Melaruphe) (jlabralu, Pliil. 



Loc. Seyclielles : Praslin I. 



Chagos Archipelago : Egmont Atoll. 



Tryon (Man. of Conch, ix. p. 251) merges this well-marked species under L. ziczac, 

 Chem., a shell which I iiave gathered in Cuha and other places in Antillean waters. 

 Indeed, the original specimens of Philippi's glabrata were reported from Peru. Von 

 Martens chronicles its occurrence in the Seychelles, Mauritius, Madagascar, Bourbon, 

 south-eastern shores of Africa, and Ceylon. Personally, I consider it distinct from any 

 form of zlczac. 



7di. Littorina [Melaraphe) mauritlaiui, Lam. 

 Loc. Chagos Archipelago. 



Seychelles : Praslin I. 

 Inclusive of L. Icevis, Phil. 



75. LittorlihK [Melaraphe) melaiiontoma, Gray. 

 Loc. Seyclielles : Praslin I. 



76. Llcturina {Melaraphe) scabra (L.). 

 Loc. Amirantes : S. Joseph I. 



Seychelles : Praslin I. 



Chagos Archipelaga: Coin I., Peros Banhos. 



Var. intermedia (Phil., sp.). 

 Seychelles : Praslin I. 

 Amirantes : Poivre I. 

 In some specimens the whorls arc rounded at the periphery, being typically keeled. 

 This widely distributed moUusc is found, in one or other of its forms, around the tropics 

 everywhere, extending as far northward as Florida in the New World and Japan in tl-.e 

 Old. The synonymy is extensive, and is given in Tryon, Man. Conch, ix. pp, 2i3, 24.i, 

 the best-known forms, perhaps, being ahenea. Reeve, anguUfera, Lam., Uneata, Gmel., 

 intermedia, Phil., filosa, Sowb., sieboldi, Phil., and nebulosa, Lam. 



