4go Records of the Indian Mttseuin. [Vol. XXII, 



Melanoides monile (.Mouss.). 



187^. Melania monile, Brut, op. cit., p. 173, pi. x.\, fig. 7. 

 1897. Melania monile, v. Marten?, op. cit., pp. 44, 45. 



In a tubeful of specimens of M. acutiswna I found three 

 specimens of this species. They had been collected in a stream- 

 let along the road to Anak Laut (Sabang). 



The exact localities o; the original specimens are rather doubt- 

 ful; they are stated to have come from Java and the Moluccas. 

 Von Martens' specimens were collected by Prof. Wichmann at 

 Kupang in Timor. 



Melanoides crenulata (Chemn.). 



1874. Melania cyenulata, Biot, op. cit,. pp. 114-117, pi. \'\\, a fig. ga. 

 1097. Melania crenulata, v. Martens, op. cit.. pp. 45, 46. 



I have compared the specimens I assign to this species with a 

 specimen named by the late Prof. E. von Martens, and can find 

 no differences in the form of the shell or the shape of the mouth. 

 These specimens, however, have vertical striae on the first 3-4 

 whorls, while von Martens' is nearly smooth. The difference is 

 probably due to age; von Martens' specimen being an adult in 

 which the striae have proliably become obsolete. The difference, 

 however, is not of much importance in this variable species. 



The Sumatran specimens are fioni near the Prise d'eau of 

 Sabang. 



Melanoides uniformis (Ouoy and Gaim.) 



1874. .Melania uiiifoi-mis, Brot, op. cit., pp. 124, 125, pi. xv, figs. 3, 3a, 



pi xvl, iig. I. 

 1S97. Melania uniformis with vars. crispulata, aeq nisu leaf a ^nd plica- 



fiila. V. Martens, op. cit., pp. 46-48; pi. iii, figs. 3-6. 



The typical form of this interesting species is not represented 

 in the Sumatran collection but specimens of the vars. crispulata , 

 aequisulcata and flicatida of v. Martens are present. The speci- 

 mens of the first variety are fiom the Soengei Minahol, while those 

 of the other two were collected in a streamlet along the road to 

 Anak Laut (Sabang). 



The present record of the occurrence of the various varieties 

 of this species in Sumatra is interesting as the species was hitherto 

 known from the North Celebes, Molucca, Bali,Flores and Timor 

 only. 



Melanoides sluiteri, Prashad (sp. nov.). 

 (Plate xiv, figs, ii, 12). 



At Mr. den Doop's request I have associated this new species 

 with the name of Prof. Ph. S'.uiter of Amsterdam. 



The shell is elongate, acuminate, somewhat conical, about 

 three times as long as broad. Toe whorls, of which there are at 

 least 7 in complete shells, increase very gradually and regularly. 



