C^ECILIOIDES, SECT. GEOSTILBIA. 47 



46. Cacilianella (Geostilbia) balanus Bens., NEVILL, Handlist 

 Ind. Mus., p. 162. (?) Cacilianella isseli PALAD., Annali Mus. 

 Civico Geneva, iii, 1872, pi. 1, f. 9, 10. Acicula t., JICKELI, 

 Moll. N.-O. Afr., p. 135. PFR., Monogr., viii, p. 297. 



I have not seen this species, which seems to be rather common 

 in the higher, dry parts of India, and to be known chiefly by 

 river-drift specimens. Pfeiffer's description and the figures of 

 Reeve and Pfeiffer indicate a shell with only weakly-truncate 

 columella, so that one understands why Colonel Beddome should 

 compare Geostilbia caledonica, (which he states is identical with 

 Indian specimens from North Canara, see Blanford, I. c.). 

 Nevill also refers the species to Geostilbia. In his description of 

 C. isseli, Paladilhe mentions emphatically its truncate columella; 

 yet his figure seems to represent a Geostilbia very close to balanus. 

 Blanford has stated that isseli is identical with balanus', but so 

 far as I can judge from the literature, there are two species 

 involved. Fig. 60 is copied from Reeve's type figure. I have 

 also copied the figure given in Oonchologia Indica, pi. 4, fig. 61. 

 By its strongly truncate columella, this figure seems to cor- 

 respond with the description of C. isseli. 



43. C. MAURITIANA (H. Adams). PI. 4, fig. 69. 



Shell imperforate, subulate-cylindric, thin, hyaline, glossy, 

 spire subcylindric, the apex very obtuse, suture impressed. 

 Whorls 5, rather flattened, the last dilated at the base; columella 

 arcuate, slightly truncate. Aperture acuminate-oval; peristome 

 simple, unexpanded, acute. Length 4, diam 1, aperture 1.33 

 mm. (H. Ad.). 



Mauritius: Ponce Mt. Mah and Silhouette, Seychelles (G. 

 Nevill). 



Acicula mauritiana H. AD., P. Z. S. 1868, p. 290, pi. 28, 

 f. 7. PFR., Monogr. viii, 295. Cacilianella ?/i., MARTENS in 

 Mobius, Reise nach Mauritius p. 199. NEVILL, Handlist moll. 

 Ind. Mus. p. 163. 



This does not seem to differ materially from gundlachi. 



44. C. COMORENSIS (Morelet). PI. 4, fig. 63. 



Shell imperforate, turrite, thin, hyaline, smooth; spire long, 

 the apex rounded, obtuse. Whorls 6, plano-convex, subscalar, 



