ZOOTECUS. 113 



1857, p. 327. PFR., Monogr. iv, 462. HANLEY & THEOB., 

 Conch. Indica, pi. 22, f. 4. 



"At once distinguished from the allied B. pullus Gray by 

 its stouter form and by the ascent of the last whorl near the 

 aperture " (Bens.). 



Var. POLYGYRATUS Reeve. (PI. 26, figs. 31). "Shell pyra- 

 midally turrited, minutely umbilicated, whorls 9 to 10, rather 

 narrow, rounded, finely plicately striated, columella reflected, 

 aperture small, lip simple; bluish- white. An erect, closely 

 convoluted shell, of which the sutures are rather impressed " 

 (Reeve). 



The habitat of the type was unknown. Nevill refers here 

 specimens from Gwadar, Beluchistan; Aden; Bender Abbas, 

 Persia ; and Rohra Hills, Sind. 



Bulimus polygyratus REEVE, Conch. Icon, v, pi. 79, f. 578 

 (1849. PFR., Monogr. iii, p. 404. Pupa insularis var. 

 polygyrata Rve., NEVILL, Handlist Ind. Mus. i, p. 195. 

 Bulimus polygiratus Reeve, ISSEL, Mem. Real Accademia della 

 Scienze di Torino (2 ser.), xxiii, p. 416, pi. 2, f. 25-28, 1866 

 (Bender Abbas). 



This is a comparatively narrow, cylindric form. Accord- 

 ing to Nevill, B. pertica Bens, is an aberrant specimen of 

 polygyratus. The description follows. 



B. pertica Benson. (PI. 26, fig. 23). Shell imperforate, 

 exactly cylindric, very much lengthened, very closely arcuate- 

 striolate, and sculptured with some inconspicuous spiral 

 grooves. White. Spire cylindric with conic, rather obtuse 

 apex ; suture impressed. Whorls 10, nearly flat, the last one- 

 fifth the length of the shell, slightly descending in front, 

 rounded basally. Aperture very oblique, piriform; peris- 

 tome thin, the basal margin thickened, subeffuse, columellar 

 margin expanded, appressed. Length 20, diam. 5 mm. 

 (Bens.). 



India: in the region of Sind (Col. W. E. Baker). 



Bulimus pertica BENS., Ann. and Mag. N. H. (2), xix, 

 April, 1857, p. 328. PFR., Monogr. iv, p. 462 HANLEY & 

 THEOB., Conch. Indica, pi. 22, f. 7. 



