72 PALUDESTRI^ID^. 



to which the specimen above described belongs, and are all of a 

 dark colour, varying from light chestnut to yellowish-brown. 



Nevill, in his ' Hand List of Mollusca in the Indian Museum,' 

 p. 34, quotes two subvarieties, as below : 



Var. carinulata. 



Apparently a deformed specimen from Assam. 



Var. gigantea. 



No description, but presumably a large form from Calcutta. 



142. Bithynia travancorica, Benson. 



Bithynia travancorica, Benson, A. M. N. H. ser. 3, vi, 1860, 

 p. 259 ; H. & T., C. I. pi. 38, figs. 2, 3. 



Original description: Testa imperforata, conoideo-globosa, irre- 

 gulariter striata, striis minutissimis spiralibus eonfertim decussata, 

 albida, vel corneo-flavescente, translucente ; spira dimidium testa3 

 OBquante, apicem versus conoidea, vertice obtusiusrulo hyalina, 

 sutura impressa ; anfractibus 4| convexis, ultimo globoso, antice 

 eensim descendente ; apertura obliqua. ovata, margine sinisiro 

 calloso, callo extus sulco marginato. Operculo normali, cras- 

 siusculo, extus nonnunquam tenuiter radiatim striato ; nucleo 

 subceutrali. 



Alt. 6, diam. 5 mm. 



Hub. Ponds near Quilon. 



143. Bithynia lutea, Gray. 



Bithynia. lutea, Gray, Ann. Phil. 1824, p. 277. 

 Bithynia goniostoma, Hutton MSS. 



Paludina pulchetla, Kiister (not Benson), ed. Cheran. Paludina. 

 p. 30, p l. 6, fig. 19 ; H. & T., C. I. pi. 37, fig. 7. 



Testa anguste perforata. globoso-ovata, sericiua, tenera, sub- 

 pell ucida, obsolete striata, subtilissirae concentrice lineata, pallide 

 ferruginea ; spira obtusa ; anfractibus 5 convexis, ultimo basi 

 albo ; apertura subovali, marginibus conjunctis, albo-callosis ; 

 perist ornate reflexinsculo, basi angulato subauriculato. (Kiister.) 



Alt. 7'25, diam. 5'5 mm. 



Hob. Purneah (Conch. Ind.). 



144. Bithynia moreletiana, Nevill. 



Bithynia moreletiana, Nevill, J. A. S. B. xlvi, pt. 2, p. 29; 

 op. cit., 1, pt. 2, p. 156, pl. 6, fig. 14. 



Original description: In shape resembling B. lutea, Gray 

 (Conch. Ind. pl. 37, fig. 7); spire peculiarly short, apex very 

 obtuse and flattened, always eroded, but not decollated ; whorls 



