MELVIIL & STKES : IIAEINE SHELLS FHOM THE ANIVAMANS. <5>9 



the Indian Ocean. As Tryon well observes, iV. Uvescens "has the 

 form of albescens, with the revolving sculpture of cremata and rihs 

 of concinnay ^ 



34. ]S"assa (]S"iotha) venusta, Dunker. In fine, live condition. 



35. EiSTGiNA zoNATA, Reovo. 



36. Latrtjnculus (Ebuena) ambulaceujt, Shy. Extends to the 

 Philippines. 



37. SisTEUM (Morula) chetsostoma, Desh. Varies, having either 

 yellow or a lilac interior to the mouth. The headquarters for this 

 appears, to be Ceylon. Another distinct species of Sistrum we have 

 not determined at present, so covered are the examples with nullipores 

 and Melohesice. 



38. Oliva EtTNEBKALis, Lam. (= 0. Z«5r«f?ore?^s^s, Bolten). Extends 

 from Ceylon to the East Indies. 



39. Oliva inflata. Lam. The range of this species extends from 

 the Eed Sea and East African coasts to Ceylon and the Seychelles 

 Islands. 



40. Oliva ieisans, Lam. A bright pretty form of this common 

 Olive ; also the variety Zeylanica, Lam. 



41. Oliva ispidtjla, L. As variable in the Andamans as elsewhere. 



42. Oliva lugitbeis, Lam. (=0. episcopalis, Lam.). Some of the 

 specimens are small, but all have the characteristic violet interior. 



43. Oliva leucostoma, Duclos. Originally described from Mauritian 

 specimens. 



44. Oliva matjea. Lam. Eange? through the whole Pacific 

 Province, and may be considered the type of the genus, which was 

 named from the dark unicolorous form of this species so precisely 

 resembling the fruit of the Olea Europcea, L., the OKve of commerce. 



45. Oliva wobilis. Reeve. A fine variety. Some authors consider 

 this, 0. tremulina, Lam., and other allied forms, to be all varieties of 

 0. irisans, Lam. Whether this be the correct way to dispose of them 

 or not, our theory is, that specific variation amongst the Olividae is 

 more limited than might be conjectured, and where we can identify 

 a shell with a name, without a shadow of doubt, we think such 

 name ought to stand. It is never difiicult to discriminate 0. nohilis 

 from 0. tremulina, 0. Mazaris, 0, ponderosa, 0. Ohjmpiaclina, or 

 from 0. ertjthrostoma. 



46. Oliva picta, Reeve. A very neat form, and in our estimation 

 specifically distinct from 0. funelralis, Lam. 



47. Oliva textilina. Lam. (= 0. sericea, Bolten). Another very 

 distinct species, often considered a variety of 0. tremulina, Lam. 

 Our Andaman specimens are fine and quite typical. 



> T.c, p. .5i. 



