PILA.. 103 



204. Pila alucinans (Sowerby). 



Pila alucinans (Sowerby), Proc. Malac. Soc. ix, p. 63 (fig. in text) 

 (as Ampullaria). 



Original description : Testa late ttirbinata, mediocriter umbili- 

 cata, t'usco-olivacea, fasciis numerosis angustis nigro-fuscis ornata, 

 longitudinaliter irregulariter plicata et striata, striis transversis 

 siibtiiissimis decussata ; spira brevis ; anfractus convex!, supra 

 planulati ; ultimus latiusculus, superne rofunde angulatus, supra 

 angulum leviter depressus, infra angulum rotunde convexus, 

 basim versus leviter contractus ; apertura latiuscula, intus fasciata ; 

 peristoma tenue. 



Alt. 23, diam. 23 ram. 



Aperrure : alt. 22, diam. 12 mm. 



Hob. Ceylon. 



205. Pila winkleyi (Pilsbry). 



Pila winklei/i (Pilsbrv), Proc. Acad. Nat. Sci., Philadelphia, liii, 

 1901, p. 19, pi. 5, figs. 2, 3 (as Ampullaria). 



Original description : Shell narrowly umbilicate, globose ; 

 yellowish-olive, uniform or with few or numerous dusky olive 

 spiral bands, the earlier whorls eroded, blackish or ruddy. Surface 

 smooth, somewhat shining, under a strong lens seen to be very 

 densely, microscopically striated spirally, the striae minutely granu- 

 lose ; spire low-conic ; sutures impressed, the whorls flattened 

 below them, elsewhere sy in metrically convex. Aperture vertical, 

 semi-rotund, narrower above, reddish-tawny and sometimes banded 

 within, becoming white near the lip ; peristome a trine expanded 

 below, white or dirty yellowish, the outer margin equably curved, 

 columella concave, blunt and more or less thickened but not 

 reflexed, parietal callus rather thin, white, thinner within. Oper- 

 culum thick and solid, concave externally, and partially covered 

 with a thin, yellowish-brown cuticle. Tnside bluish, with a mica- 

 like gleam, the scar of attachment sunken, the columellar side 

 concentrically striate, the enclosed eminence narrow, curved and 

 smooth. 



Alt. 58, diam. 50 mm. 



Aperture : alt. maj. 43 mm. 



Hob. Henzada. Burma ( Winkley}. 



Types in Coll. Acad. Nat. Sciences, Philadelphia. 



