90 DESCRIPTION OF NEW 



which I owe to Dr Gibbon. In many respects it very closely resem- 

 bles the H. pellis serpentis (Lam.). It may, however, be at once dis- 

 tinguished from that species by its being striate and not granulate, a cha- 

 racter in pellis serpentis not noticed by Lamarck, but which exists in 

 all I have examined. It is also a much larger shell, and much more 

 flattened above. The umbilicus is larger, and the area around it white. 

 Beneath these are seven revolving lines, which are red and white 

 spotted. 



Paludina sinistrosa. Plate XXIII. fig. 78. 



Testa sinistrosa, ventricoso-conoided, subtenui, tenebroso-comed, striata, lath umbilicatd ; 

 suturis impressis ; anfractibus quinis, valdh convexis; aperturd subrotundatd, intus purpuras- 

 centi. 



Shell sinistral, ventricoso-conoidal, rather thin, dark horn-colour, striate, widely um- 

 bilicate ; sutures impressed; whorls five, very convex; aperture nearly round, purplish 

 within. 



Hab East Indies. Miss Hodges. 



My Cabinet. 



Cabinet of Miss Hodges. 



Diam. l-l, Length 1*3 inches. 



Remarks. — This is the only sinistral species of Paludina which has 

 come under my notice, and I am indebted to the kindness of Miss 

 Hodges, of Salem, Massachusetts, for one of the two specimens which 

 were in her fine cabinet. This species is so ventricose that it might 

 be almost mistaken for an Ampullaria. It cannot, however, be con- 

 founded with that from the Nile {Amp. carinata, Caill.). The interior 

 is purple brown, being at the edge of the lip bordered with white. 

 Under the lens the longitudinal striae will be observed to be very close 

 and small. 



