236 ENIDJE. 



aperture, owing to the right margin of the peristome being more 

 inflexed. 



A single shell in the Theobald collection, from the N.W. 

 Himalayas, is probably the one on which the figure in Conch. 

 Ind. is based. 



Subgenus SUBZEBRINUS, Westerlund. 



Subzebrinus, Westerlund, Fauna Palaarct. iii, 1887, p. 66 (as section 

 of Buliminus) ; Mollendorff, Ann. Mus. Zool. St. Petersburg, vi, 

 1902, p. 327 (as subgenus of Buliminus) ; Wiegmann, torn. cit. 



&241 (anatomy) ; Kobelt & Mollendorff, Nachr. Deuts. Malak. 

 es. 1903, p. 47. 



TYPE : (first species) Bulimus eremitus, Reeve. 



Range. Central Asia, India, China, Japan. 



Shell subcylindrical, whitish, generally transversely streaked 

 with pale brown; margins of peristome united by a more or less 

 strong callus, with or without a denticle near the upper margin. 



Jaw aulacognathous, distinctly dilated towards the sides. 



Radula with 61-89 teeth, corresponding in most species to the 



formula i^i.+i-^ra:' bllt in a few to nr 



Genitalia: the spermatheca duct, including the diverticulum, 

 after separating from the ovisperm duct, which is contiguous to 

 both, reaches far beyond the albumen gland, frequently being 

 twice, in some cases three times, the combined length of the 

 albumen gland and ovisperm duct. 



The neck of the uterus, which in the genus usually exceeds the 

 vagina in length, is here practically twice as long, in one case 

 (B. melinostoma) more than three times its length. B. dolicho- 

 stoma, in which, on the contrary, the vagina is about one-third 

 longer than the neck of the uterus, is an exception in this respect. 

 The penis is moderately long, attaining only from two-thirds to 

 three-quarters of the length of the spermatheca duct and diverti- 

 culum. The appendix is somewhat longer than the penis and 

 reaches beyond the albumen gland. In one species, however 

 (B. melinostoma), the appendix is about one-third shorter than the 

 penis, agreeing in this respect with the section Pupinidius. As 

 compared with the ovisperm duct, including the albumen gland, 

 the appendix is from 1^ to 2^ times as long. A rudimentary 

 caecum, situate about the middle of the penis, appears as a diminu- 

 tive tubercle. In one species (B. melinostoma) it is wanting. 

 ( Wiegmann.) 



207. Ena vibex, Raster. 



Bulimus vibex (Hutton), Kiister, Conch.-Cab*, Bulimus, 1845, p. 57, 

 pi. 17, figs. 5, 6 ; Pfeitfer, Mon. Helic. Viv. ii, 1848, p. 118 ; 

 Reeve, Conch. Icon, v, 1848, Buliminus, pi. 47, fig. 299; Hanley 

 & Theobald, Conch. Ind. 1870, pi. 20, fig. 5 (? var.), pi. 22, fig. 8 

 (var.), pi. 23, fig. 2. 



Bulimulus (Ena) vibex, Adams, Gen. Rec. Moll, ii, 1855, p. 161. 



