254 



the rivers Jumna and Sutlej (Button) ; Jhilum. Valley (StoliczJca). 

 Common on the outer hills from the Jumna to the Indus 

 [Kashmir] (Theobald) ; Lundi Kotal (Spratt). 



" Communicated to Mr. Benson by Capt. Hutton with the title 

 Papa strigata, of which the specific name is occupied in the present 

 genus." (Reeve.) 



Hanley considers rufistrigatus a somewhat doubtful species 

 (Conch. Ind. p. 12), running into pretiosus and eremita, while 

 Theobald (J. A. S. B. xlvii, 1878, p. 146) states that " closely 

 allied to this species and with difficulty separable in a large series, 

 are eremita, sindicus, salsicola, and spelceus." 



Var. gracilis (Benson), Hanley fy Theobald, Conch. Ind. 1870, 

 p. 10, pi. 20, fig. 4 ; Nevill, Haiid List, i, 1878, p. 134. 



Smaller and slenderer than the type. Length 11 mm. 

 Hob. India : Kashmir (StoliczJca) ; Kakerhati (Theobald). 



With the foregoing observations I entirely associate myself, 

 but would exclude spelceus, as being absolutely synonymous with 

 eremita, while I would add domina. With the large series of these 

 species before me I have experienced great difficulty in defining 

 their limits. On the whole, I would consider rufistrigata as 

 being the smallest of the group and distinguishable from eremita 

 by the more convex spire. Like most of the other members of 

 the group, it occurs in sinistral as well as dextral specimens, the 

 former being represented by a shell in the British Museum, 

 collected at Simla by Hutton, and measuring 17x7 mm., together 

 with three dextral ones. The species has also been found at 

 Lundi Kotal by Major Spratt. The variety gracilis, again, con- 

 nects the species with E. beddomiana, but differs principally from 

 that species in having the last whorl proportionately larger. 

 Five specimens of this variety from Kakerhati are in the Theobald 

 collection. 



Subgenus SEBJNA, Gredler. 



Serina, Gredler, Gymnasialprogr. Bozen, 1898, p. 10 (as Genus) ; 

 Mollendorff, Ann. Mus. Zool. St. Petersburg, vi, 1902, p. 356 

 (as Subgenus of Buliminus) ; Wiegmann, torn. cit. p. 270 

 (anatomy) ; Kobelt & Mollendorfi, Nachr. Deuts. Malak. Ges. 

 1903, p. 58. 



TYPE : (first species) Serina cathaica, Gredler. 



Range : China, India. 



Shell more or less cylindricaJ-turreted, many-whorled ; whorls 

 convex, aperture oblong-rouindate, peristome widely expanded, 

 scarcely reflexed, margins united by a distinct callus. 



Jaw scarcely or not at all dilated towards the sides. 



Radula transverse, with 41-48 teeth, of which the central and 

 the first 4 or 5 laterals are in some species unicuspid, sometimes 

 showing rudiments of outer side cusps. 



