3S0 FEIirSSACID.E. 



ally G. tenulspira, Bens., by Dr. Stoliczka during a recent visit. 

 It is easily distinguished from the latter species by its slenderness 

 (the diameter being i of the length), and the comparative narrow- 

 ness of its whorls ; moreover, b}^ the form of the columella, the 

 lower part of which is bent abruptly almost at right angles with 

 the slope of the inner lip; while in G. tenuispim, G. erosa, and 

 other allied forms, the curvature is at the utmost obtuse. Speci- 

 mens, the shell of which has been slightly Meathered, shew fine 

 spiral markings, but these are not visible unless the shell has 

 become somewhat opaque. The animal is dark leaden grey, some- 

 what paler at the sides of the foot." {Blai\ford.) 



Beddome thought this only a more slender form of temdspira, 

 and Pilsbry reduced it to varietal rank, but I consider hacidina 

 sufficiently distinct to retain it as a species. The shell is more 

 cylindrical and more strongly striated than tenuispira, while it is 

 distinguished from shiplayi in being more shining and in having 

 the whorls more flattened. 



A specimen from Darjeeling, in the Beddome collection, is 

 composed of 12i whorls and measures 32 x mm. 



345. Glessula pertenuis, Blanford. 



Achat ina peyteniiis^ ])lanford, .T. A. S. B. xxxiv, 1865, p. 79; 



Pfeiffer, Mon. Helic. Viv. vi, ]868, p. 237. 

 Achatinn {Electra) pcvteiiuis, lianley & Theobald, Conch. lud. 



1870, pi. 18, fig. 5. 

 Stenojiyra {Glessula) pertenuis, Xevill, Hand List, i, 1878, p. 169. 

 Steiioqr/ra (Subidina) pertenuis, Pfeiffer & Clessiu, Nomencl. Helic. 



Viv." 1881, p. 327. 

 Glessula pertenuis, Beddome, Proc. ^lalac. Soc. London, vii, 1906, 



p. 160. 

 Glessula tenuispira, var. pertenuis, Pilsbvv, Man. Conch. i?er. 2, xx, 



1909, p. 89, pi. 9, fig. 3. 



Orhjlual descrtpiioii : — " Shell very slender, turrited, thin, light 

 horny, ])olished, closely, minutely, and rather irregularly striated. 

 Spire subulate, somewhat acuminate towards the blunt apex ; 

 suture impressed, subcrenulate. Whorls 11-12, convex, the last 

 about i the length of the spire. Aperture oblique, ovately 

 pyriform, ])eristome thin, margins united by a thin callus, colu- 

 mella moderately curved, obliquely truncated." (Blanford.) 



Length 20, diam. 4\, length of aperture 4 mm. 



Hah. Bvarma : Tongoop, Arakan (Blanford) ; Arakan (StoliczJca) ; 

 Akoutong (Theobald) ; Thyet ~Slyo (Hungerford). India: Assam 

 (Stoliczlri) ; Garo Hills (Godivln- Austen) . 



" A much more slender species than A. tenuispira, Bens, (a 

 variety of which also abounds in parts of Pegu), though there are 

 signs of a passage. The present appears to replace A. tenuispjira 

 in Arakan and Bassein. Mr. Benson, to whom I sent a specimen, 

 observes that it is intermediate between A. tenuispira and 

 A. hashda, Bens." (Blanford.) 



