500 COLLECTIONS PROM THE WESTERN INDIAN OCEAN. 



58. Ranella pnsilla, var. 

 Seychelles, 4-12 fms. ; also Darros Island, in 22£ms. 

 The variety from the Seychelles is white, stained with purple on 

 the posterior side of the varices, and with pinkish brown at the top 

 of the body-whorl at the suture. The last whorl has also a bright 

 pink band low down on the dorsal side, a spot of the same colour 

 on the middle of each lateral varix, and a black extremity. The 

 mouth of the aperture is of a pretty purple-pink colour, armed with 

 seven white tubercles on the outer lip, and four or five on the 

 inner. 



59. Triton (Persona) cancellinus, Eoissy. 

 Var.= Triton decipiens, Eeeve, Conch. Icon. fig. 102. 

 Providence Eeef, Mascarenes, in 24 fms. 



60. Natica tesseUata. 

 Philippi, Cmeh.-Cdb. ed. 2, p. 48, pi. 7. fig. 7. 



Mozambique, between tide-marks. 



The exact locality of this species has not, I believe, been hitherto 

 known. 



61. Cypraea asellns, lArme. 



Seychelles, in 4-12 fms. 



62. Trivia scabrinscula, Gray. 

 African Island, Amirantes. 



63. Erato corrngata, Hinds. 



Eagle Island, Amirantes, in 12 fins. 



I fail to discover any distinction between this species and E. 

 nana, Duclos. It is of a greenish-yeUow colour, having the an- 

 terior extremity and sometimes the apex of the spire rose-tinted. 

 The surface is granulated throughout, the granules being elongate, 

 and down the doisal surface there is a conspicuous deep groove. 

 Reeve's %are (Conch. Icon. fig. 12) does not apparently represent this 

 species. 



64. Littorina glabrata, Philippi. 



Eagle Island, Amirantes. 



65. Cerithiiim echinatrun, Lamarck. 

 African and Darros Islands, on the shore. 



66. CeritMum colnmna, Sowerly. 

 African Island. 



