490 COLLECTIONS FROM THE WESTERN INDIAN OCEAN. 



This species to the naked eye appears to he almost uniformly 

 light pink ; hy the aid of a lens, however, it is seen to be coloured 

 as described above, and in addition there are two or three white 

 dots placed at distant intervals upon the upper margin of the 

 whorls. 



33. Nassa arcularia, LinnS. 

 Mozambique, between tide-marks. 



34. Nassa granifera, Kiener. 

 Cerf Island, Mascarenes, in 10 fms. 



35. Nassa gaudiosa. 



Hindu ; Reeve, Conch. Icon, viii. fig. 43. 



Mozambique, between tide-marks 



The specimen from this locality is shorter than that figured by 

 Reeve, and almost as stout as N. mucronata, A. Adams, which is 

 very closely allied. 



36. Nassa stigmaria, var. 



A. Adams, Proc. Zool. Soc. 1851, p. 9G ; Reeve, Conch. Icon. 



figs. 42 a, b. 

 Var.=N. densigranata, A. Adams; Reeve, Conch. Icon. fig. 181. 



Marie-Louise Island, Amirantes, 10-17 fms. (Coppinger). 



The little shell from the above island resembles in every particular 

 N. densigranata, said to have been originally found at the Philippine 

 Islands, and which I think should be regarded as a dwarf form of 

 N. stigmaria. This species I have elsewhere quoted from the Korean 

 Straits. 



37. Phos nodicostatus, var. 

 A. Adams; Soicerbi/s Thesaurus, vol. iii. p. 93, pi. 222. fig. 47. 



Darros Island and Poivre Island, Amirantes, 20-22 fms. ; also 

 Cerf Island and Providence Reef, Mascarenes, in 10-24 fms. 



The same shell, regarded by Martens as a variety (rhodostoma) of 

 P. textus of Gmelin (Moll. Mauritius, p. 241, pi. 20. f. 7), was 

 dredged by Prof. Mobius at five fathoms depth at the Seychelles. 

 The sculpture is of a more delicate character than obtains in 

 P. textus, and the spire is more graceful. 



38. Purpura hippocastanurn. 

 African Island, Amirantes. 



39. Purpura (Jopas) sertum, Bruguiire. 



Darros Island, Amirantes. 



