KACHISELLUS. 273 



rectum, margine coluinellari papyraceo, fornicatim reflexo, 

 subadnato. 



" Long. 20, diam. 9^ mill. Ap. 9 mill, longa, 6 lata." (Pfeiffer. ) 



Hab. Ceylon (Nwill). 



242. Rachisellus trutta, Blanford. 



Bulimits trutta, Blanford, J. A. S. B. xxxv, 1866, p. 42; Pfeiffer, 



Mon. Helic. Viv. vi, 1868, p. 125 ; Hanley & Theobald, Conch. 



Ind. 1874, pi. 80, fig. 4. 

 Buliminus (Rhachis) trutta, Nevill, Hand List, i, 1878, p. 131 ; 



Kobelt, Conch.-Cab., Fam. Buliminidae, 1900, p. 668, pi. 102, 



fig. 20. 

 Bulimina (Rachis) truita, Pfeiffer & Clessin, Nomencl. Helic. Viv. 



1881, p. 285. 

 Ehachis trutta, Kobelt & Mollendorff, Nachr. Deuts. Malak. Ges. 



1903, p. 39. 



Original description : " Shell perforated, conically ovate, thin, 

 finely striated, light yellowish, with two spiral rows of sub-distant 

 chestnut spots, sub-quadrate in form, on all the whorls, and two 

 spiral chestnut stripes, the lower sometimes very faint, upon the 

 last whorl below the periphery. Spire conical, apex acute, sutures 

 impressed. Whorls 5|, convex. Aperture nearly oval, slightly 

 oblique. Peristome thin, margins united by a thin callus, colu- 

 mellar margin vertical, narrowly reflexed, the reflexed portion 

 meeting the penultimate whorl at an angle. 



" Length 14, diam. 9 millim. Aperture 7 mill, long, 4| broad." 

 (Blanford.) 



Hab. India : Anamullay Hills (Beddome, Blanford). 



"There is some doubt whether the shells above described be 

 adult. They have a somewhat immature appearance, but all the 

 specimens sent, four in number, are of precisely the same size, and 

 the thin peristome is characteristic of the group of Bidimus 

 Bengalensis, to which the present species belongs. From that 

 species and its allies, it is easily distinguished by its short conical 

 form." (Blanford.} 



Most of the specimens of this species I have seen are larger 

 than the type. Three shells in the British Museum measure 

 19 x 10-5 mm., two in the Theobald collection 18 x 10 mm. ; while 

 five specimens in the Beddome collection range from 16 x 10 to 

 12*5 x 8 mm., the latter being immature. All possess the two 

 narrow, chestnut, spiral infra-peripheral bands and the two supra- 

 peripheral spiral rows of subquadrate spots, referred to in the 

 original diagnosis. 



The species appears to be confined to the Anamullay Hills, as I 

 have neither seen specimens from any other locality nor traced 

 any record of such. 



