156 BURMA, ITS PEOPLE AXD PRODUCTIOXS. 



LiTHOGLTPncs, MuhlfeMt. 



Tentacles subulate, eyes at their outer bases. Operculum ovate, paucispiral. 

 Shell thick, smooth. Inner lip callous. 



,, ilART.vnASEXsis, Thcobalcl. Jlartaban. 



A few specimens ■without the animalg have been found in some places iu the 

 llartaban district, but have not been noticed elsewhere. 



Family Planaxidae. 

 Pl.utaxis, Lamarei. 



Teeth in seven rows. A produced siphon in front. This genus approaches 

 Littorina, but is separated by the presence of a siphon. 



* ,, SULCATA, Born. 



* „ sp. 



Family Rissoidse. 

 Operculum horny, subspiral. Shell turrited, generally white, and aperture 

 simple. 



KISSOIN^. 



*Rissoi;s^A D'oRBiGNYi, Adams. 



* ,, OBELiscus, Reeluz. 



* ,, BICALLOSA, Schwartz. 



* ,, C.ANCKLLATA, Fllil. 



,, ruNicuLATi, Souverbie. Andamans. 



* ,, Weinkauffiana, G. Nevill. Andamaus. 



* ,, MiNnTA, tt. and H. Nevill. Andamans. 

 ,, EVANiDA, G. and H. Nevill. Andamans. 



* ,, C.ELATA, Adams. 



ASSIMINEIN^. 



AssiMiNEA, Leach. 



Operculum homy, subspiral. Eyes placed superiorly towards the end of the 

 tentacles. Inhabit salt, brackish, or fresh water near the coast. 



,, FEANCEsia:, Gray. Pegu. 



,, KUBELLA, W. Bl. Pegu. 



,, HuNGERFORDiANA, G. NcviU. Mouth of tho Rangoon R. 



,, Tejipleana, G. Nevill. Nicobars. 



In addition to the above, the following species have been described, some of which 

 may range to Burma : — 



,, "VVoodmasoniana, G. Nevill. Jfouth of the Ganges. 



,, Beddomeana, G. Nevill Jlouth of the Ganges. 



,, TnEOBALDiANA, G. NcviU. Mouth of tlie Ganges. 



,, MiCKOscuLPTA, G. Nevlll. Mouth of the Ganges. 



Ieavadia oekata, W. Bl. Bassein District. 



FcimHij Viviparidse. 

 VrviPAHA, Lamarch 



Animal with a small lobe on each side of the neck. Shell turbinate. Operculum 

 bomy, nucleus central. 



,, Benoalensis, Lam. Pegu and Teuasserim. 



V. doliaris, Gould. Tavoy. 



V.filosa, Hauley. Pegu. 



V. digona, W. Blanford. Pegu. 



