172 cvcj.ophokiDjE. 



Geuus TORTULOSA, Grcuj. 



Tortulosa, Gray, Proc. Zool. Soo. 1847, p. 177 ; Adams, Gen. 

 Kec. Moll, ii, 185G, p. 285; Cbenu, Man. Concbvl. i, part 2, 

 1860, p. 489; Kobelt, Das Tierreich, Lief. 16, 1902, V- -81- 



Cataulus, Pfeiffer, Zeits. Malak. viii, 1851, p. 149 ; id., Mou. Pneuni. 

 1852, p. 136; Blanford, A.M. N. H. ser. 3, xiii, 1864, p. 462; 

 VI. Nevill, Enuiu. llelic. Pneiim. Ceylon, 1871, p. 5; G. Nevill, 

 Hand List, i, 1878, p. 297 ; Fischer, Man. Oonchyl. 1885, p. 741 ; 

 Kobelt & M()llendorff, Nachr. Ueiits. Malak. Ges. xxix, 1897, 

 p. 143 ; Svkes, Proc. Malac. See. iii, 1898, p. 66 ; Kobelt & 

 MiiUeudorff, Cat. Pneum. 1899, p. 39; Digby, Proc. Malac. Sue. 

 V, 1903, p. 261 (anatomy) ; Sykes, Journ. Malac. x, 1903, p. 2 ; xii, 

 1905, p. 54. 



Type, Turbo tortnosas, Chemnitz, 



Range, liulia : Southern India, Ceylon ; Nicobars. 



Shell perforate, pupa-shaped, not callous, last whorl furnished 

 with a filiform, basal keel ; aperture circular, entire, prolonged at 

 the base by a somewhat circular channel ; peristome continuous, 

 dilated at its lower extremity into the keel of the last whorl. 

 Operculum orbicular, fiat, horny, multispiral. 



Subgenus EUCATAULUS, Kohdt. 



t'ofaulus, Pt'eifter (part. " nonnales "), Pfeiffer, Mon. Pneum. 



Suppl. 1, 1858, p. 87. 

 Eucatanlus, Kobelt, Das Tierreicb, Lief. 16, 1902, p. 281. 



Type, Cataulus templemani, Pfeiffer. 



Hab. Southern India, Ceylon. 

 Last whorl not solute. 



248. Tortulosa albescens, BlnnforJ. 



Catatdus albescens. Blanfurd, J. A. S.B. xlix, 1880, p. 214 ; Kobelt 

 & Mollendorff, Js^acbr. Deuts. Malak. Ge.s. xxix, 1897, p. 143 ; id.. 

 Cat. Pneuni. 1 899, p. 39. 



Tortulosa {Eucatanlus) albescens, Kobelt. Das Tierreicb, Lief. 16, 

 1902, p. 282. 



Original description : — " Shell subperforate, subovately turreted, 

 rather thin, whitish horny, rather sinuately and eostulately striated. 

 Spire turreted, with the sides convex, apex obtuse, suture much 

 impressed. Whorls 7, convex, the last more closely wound than the 

 penultimate, to which it is but slightly attached just behind the 

 mouth. Basal keel transversely striated, subobsolete on the body- 

 whorl near the junction of the peristome, becoming stronger in 

 front and dilated near the mouth ; the space inside the keel and 

 around the umbilicus is of moderate sizn and plicately striated. 

 Aperture nearly circular and subvertical, with the opening of the 

 basal canal to the left of the base, and in nearly the same plane as 

 the aperture. Peristome white, thickened, expanded and turned 



