CURVELLA, ASIA. 67 



Aperture narrow, oblong, subangular above and at the base ; 

 peristome simple, unexpanded, the right margin lightly arcu- 

 ate, columellar margin somewhat twisted, calloused, subre- 

 flexed. Length 7.75, diam. 3.75, aperture 4.75x2 mm. (Pfr., 

 from spec, in Benson coll.). 



Darjeeling (Benson, Blanford, et al.). 



Bulimus sikkimensis REEVE, Conch. Icon., v, pi. 87, f. 651, 

 Feb., 1850 (young). PFR., Monogr., iii, p. 436. BENSON, 

 Ann. & Mag. N. H. (3), v, p. 464. HANLEY & THEOB., Conch. 

 Indica, p. 10, pi. 19, f. 7 (adult). Hapalus s., NEVILL, Hand- 

 list, p. 174. 



The type was a very young shell (fig. 59). It attains a 

 larger size, as figured in the Conchologia Indica (fig. 60), 

 and described by Pfeiffer. According to Benson the species 

 attains a size of 17 mm. long by nearly 10 diam., with 7 

 whorls. 



36. C. JOUSSEAUMEI (de Morgan). PI. 9, figs. 56, 57. 



Shell turriculate, thin, fragile, translucent, white, imper- 

 forate, smooth, ornamented with extremely fine lines of 

 growth; composed of 5 to 6 regularly convoluted whorls. 

 Aperture vertical, elliptical, widely invaded by the penult, 

 whorl; peristome straight and acute; columellar margin re- 

 flexed as in Spiraxis; the outer edge forming a rounded pro- 

 jection in the middle. Length 7, diam. 3, length of aperture 

 2.5 mm. (de Morg.). 



Perak: Gunong Tcheura, near Ipoh, Kinta (de Morg.). 



Hapalus j., DE MORGAN, Bull. Soc. Zool. France, 1885, p. 

 372, pi. 5, f. 2. 



37. C. BOETTGERI (Gredler). PI. 9, fig. 44. 



Shell small, imperforate, long-oval, thin, pellucid, very 

 glossy, superficially and wide-spaced striatulate, waxy-whit- 

 ish ; apex obtuse. Whorls 7, rapidly increasing, very convex, 

 the last about equal in length to the others together. Aper- 

 ture large, ovate-piriform, perpendicular; columella twisted, 

 receding at the basal sinus, peristome unexpanded, the colu- 

 mellar margin very short, reflexed at the insertion; outer 



