AMPHIDROMUS, S.-G. PSEUDOPARTULA. 9 



ceylanicus and intermedius Pfr., by its more ventricose form, the 

 more ample aperture and the mode of sculpture. A perfect specimen 

 in the Museum of the India House, and a young one received from 

 Dr. Jerdon, have the periphery angulate ; whereas an adult specimen 

 communicated by Dr. Jerdon is deficient in this feature " (Bens.). 



A. CALCADENSIS (< Beddome ' Blanford). PI. 1, figs. 19, 20. 



Shell sinistral, nearly covered perforate, high trochiform, rather 

 solid, striatulate, whitish, covered with tawny cuticle (or yellowish, 

 perhaps variegated). Spire conic, the apex obtuse, suture impressed. 

 Whorls 5^, convex, regularly increasing, the last about three-sevenths 

 the total length, carinated, convex beneath, more swollen in front. 

 Aperture oblique, somewhat rhombic ; peristome not thickened, a 

 little expanded, the margins distant, connected by a thin callus, col- 

 umellar margin triangularly reflexed, nearly closing the perforation. 

 Length 23, diam. 17, aperture with peristome 11 mill, long, 8 wide 

 inside. (Blanf.) 



Calcad Hills, Travancore (Beddome, Bourdillon.) 



Bulimus calcadensis Beddome MS., W. T. BLANFORD, Journ. 



Asiat. Soc. Bengal, xxxix, pt. 2, p. 18 (1870) PFR., Monogr. viii, 



p. 65 HANLEY & THEOBALD, Conch. Indica, p. 59, pi. 148, f. 2, 

 3. Geotrochus calcadensis Bedd., THEOBALD, J. A. S. B. xlv, pt. 2, 

 p. 187, pi. 14, f. 7 (1876) Buliminus (Beddomea) calcadensis W. 

 Blf., KOBELT, Conch. Cab., p. 681, pi. 103, f. 7, 8. 



A single specimen, much weathered but perfect, was found by 

 Major Beddome. It is evidently a colored shell, but only traces of 

 the epidermis remained. It is allied to B. albizonatus Rv. and B. 

 intermedius Pfr., of Ceylon, but is sinistral and has a shorter, more 

 conical form." (Blanf.). A specimen collected by Mr. Bourdillon 

 (fig. 20) is "slightly smaller than the type, measuring, alt. 20, greater 

 diam, 14.8, lesser 12.8, aperture, alt. 11, width 8 mill." (Theob.*) 



Subgenus'PsEUDOPARTULA Pfr., 1855. 



Pseusopartula PFR., Mai. Blatt. ii, p. 162 (for B. galericulurn). 

 Pseudopartula PFR., Monogr. iv, p. 365. PILSBRY, Nautilus x, 



1897, p. 109. ANCEY, Ann. Mus. d' Hist. Nat. Marseille, Bull, i, 



1898, p. 147. Geotrochus MARTENS; Helix METCALFE ; Nanina 

 PFR. et al.; Dyakia KOBELT. 



Shell sinistral, trochiform or depressed, of 5^ or 6 whorls, thin, 



