, (LECILIOIDES. 375 



Cionella (Cecilioides) balanus, Pfeiffer & Clessin, Nomencl. Helic. 



Viv. 1881, p. 335. 

 Ccecilioides (Geostilbia) balanus, Pilabry, Man. Conch, ser. 2, xx, 



1908, p. 46, pi. 4, figs. 60, 61. 



Original description : " Shell cylindrically oblong, somewhat 

 fusiform, whorls four in number, smooth, shining, apex obtuse, 

 columella arched, truncated, aperture small ; dull white." (Reeve.) 



Hob. India: Agra (Boys)- Banks of the Jumna, near Humeer- 

 pore, Bundelkhund (Benson) ; Kattiwar, near Agra (Theobald) ; 

 Deccan and Sind (Blanford, Theobald) ; Kashmir (Theobald). 



" T. subcylindraceo-acicularis, laevjgata, hyalina ; spira sub- 

 cylindracea, vix attenuata, obtusa ; anfr. 4 planiusculi ultimus 

 | longitudinis subaequans, basi dilatatus ; columella substricte 

 recedens. ad basin aperturae late angulato-ovalis vix truncata ; 

 perist. simplex, rectum, acutum. 



" Long. 3, diam. vix 1 mill. ; ap. 1^ mill, longa." (Pfeiffer.) 



Blanford was of opinion * that the shell described by Crosse as 

 Geostilbia caledonica t, from New Caledonia, was co-specific with 

 balanus. but the figure of the former does not lend any colour 

 to this view. 



341. "Caecilioides bensoni, sp. n. 



Shell narrowly cylindrico-conoid, almost fusiform, rather thin, 

 opaque white, smooth and glossy. Spire narrow, with straight 

 sides ; suture linear, submarginate ; apex obtuse. Whorls 6, 

 flattened, increasing slowly at first, the last four very rapidly. 



Fig. 121. Cacilioides bensoni. 



Aperture oblique, pyriform, the margins united by a thin callus 

 on the parietal wall ; peristome slightly thickened ; outer margin 

 straight, obliquely descending and curving forward ; basal margin 

 regularly curved ; columella slightly curved and slightly truncate. 



Length 5, diam. 1*25 mm. 



Hab. India : Plains. Type in the British Museum. 



This new species differs from 0. balanus, besides being con- 



* J. A. S. B. xliv, 1875, p. 43. 



t Journ. Conchy!, xv, 1867, p. 186, pi. 7, fig. 4. 



