MELVILL— MARINE MOLLUSCA. 81 



little pearly Solariella, having all the appearance of a benthal mollusc. The sculpture, 

 as given above, varies a little in the two sj)ecimens, being more pronounced in the most 

 broken example — the principal feature being the very strong and pronounced circlet 

 of short sulcations, 13-14 in all, around the umbilicus. Tlie specific name has been 

 proposed in aUusion to the very deeply cut incised umbilical radiations. 



30. Solariella [Conotrochus) sayademalhana, sp. nov. (Plate 5. fig. 4.) 



S. testa parva, profunde umbilicata, albo-straminea, conica; anfractibus 6-7, quorum 

 1^ apicales Iseves, vitrei, cseteris gradatulis, delicate multiliratis, lirulis tenuis- 

 simis, tribus magis conspicuis, longitudinaliter, prsecipue apud suturas, radiatim 

 arete ci'enatu.lis, basi tenuiter multilirata, ad umbilicum angulata, iutus tenuissime 

 longitudinaliter striata ; apertura rotunda, peristomate tenui, margine collumellari 

 baud reflexo. 

 Alt. 4, lat. 5 mm. 



Log. Saya de Malha Banks : Station C 4, 150 fathoms. 



A delicate, small, many-lirate Conotrochus, allied to ^S*. variabilis, A. Ad., and singa- 

 porensis, Pilsbry, but not exactly agreeing with their definitions. The subgenus 

 Conotrochus, while holding good for the species just mentioned, seems in some cases to 

 merge very gradually into the typical Solariella. 



31. Ethalia striolata, A. Ad. 



Loc. Cargados Carajos : Station B 9, 30 fathoms. 



32. Phasianella cethiopica, Phil. 

 Loc. Coetivy I. 



33. Turbo murmoratus, L. 

 Loc. Aldabra I. (sp. max.). 



Chagos Archipelago. 

 Seychelles : Praslin I. 



34. Turbo {Senectus) argyrostomus, L. 

 Loc. Coetivy I. 



Seychelles : Praslin I. 

 Chagos Archipelago. 



35. Turbo {Senectus) intercoslalis, Menke. 

 Loc. Seychelles : Praslin I. 



Chagos Archipelago. 

 This includes T. articulatus, Reeve, elegans, Phil., &c 



36. Turbo [Senectus) radiatus, Gmel. 



Loc. Saya de Malha Bank : Station C 16, 55 fathoms, among loose Lithothanmia- 

 rubble. 



SECOND SERIES. — ZOOLOGY, VOL. XIII. H 



