/4 PAI.UUESTRIMD.E. 



sful|iture, alino.sf. \^lllte, with a very slight brownish tinge here 

 and there, suture very distinct, spire eloiigately drawn out, apex 

 rather obtuse; whorls 4^, convexly ventrieose, the la.st one 

 tumidly and globosely swollen, about the sanie size as the others 

 together, a distinct opaque varix on the left-hand side (away 

 from the aperture) on each side of the two last whorls ; aperture 

 nearly round, not oblique, with scarcely thickened, convex, 

 peristome, and columellar margin nearly straight, subangiilate 

 at base. 



A^ery variable in size. Type : Alt. 6, diam. 4 mm. 



Hab. Kutch. 



Type in Indian Museum, Calcutta. 



A thinner form designated by Nevill, var. tenuior, also occurs 

 in the same locality, 



147. Bithynia inconspicua, Dohm. 



BitJn/ina inconspicHU, Dobni, P. Z. S. 1857, p. 123 ; II. & T., C. 1. 

 pi. o7, figs. 5, (3. 



Oriyiual description : — Testa obloiigo-conica, tenera, alba vel 

 f ulva, pellucida ; spira acuta ; anfractus 4-5 convexiusculi, sub 

 lente leviter longitudinaliter striati; apertura oblonga. Operculum 

 testaceum, concentricum. 



Alt. 5, diam. 3*5 ram. 



Aperture : alt. 2*5, diam. 1"75 mm. 



JJab. Ceylon. 



148. Bithynia orcula, Benson. 



Bithynia orcnhi, Een.«oii, M8S. iu Fraiienfeld, Verliandl. zuol.-but. 

 AVien, I8t)2, p. llo4 ; H. &. T., C. 1. pi. 38, tig-8. 8, 9. 



Shell very convex, globosely conic, scarcely perforate, milk- 

 M'hite, smooth though little polished; whorls 4, sliglitly rounded 

 with the exception of the last which is considerably swollen ; 

 aijerture large, roundly ovate ; columellar margin somewhat 

 retlexed ; operculum weakly convolute, rather concave with 

 central nucleus. 



Alt. 6"4, diam. 5 mm. 



Hab. Purneah (Con. Icon.). 



Kevill in his ' Hand List,' pp. 36-37, cites several varieties 

 Avithout other descriptions than those contained iu the names 

 themselves ; these are as below : — 



Yar. minor. 



Hab. Orissa (Ball). 



Yar. prcducta. 



JJab. Sambhar and Salt-Lakes (SloUczl-a); Jam:i]|nir (67o?/(-/.a); 

 Ferozpur {J'onpU'). 



The dimensions of the latter are :— Alt. 7. diam, o-'2b nun. 



