162 HELIC1D2E. 



Genus COELOSTELE, Bens, (type C. scalaris, Ben.). 



1. Coelostele scalaris, Benson. 



2 Sind ; coll. W. T. Blanford, Esq. 



Perfectly smooth, except that there are a few distant broad 

 varex-like ribs, on the penultimate whorl. 



2. Coelostele paladilhiana, Nev. 



[= C. scalaris, Palad., not Bens.] 



6 Aden ; ex c. Arturo Issel, Esq. 



Only separable from the preceding by the distinct, almost 

 microscopic striation, and the whorls being a trifle less cylin- 

 drical. 



Genus CAECILIANELLA, Bowrg. 



[= Acicula, Leach ; fide Carus and Gerst. = GeosUl- 



Ua, OP.] 



[= Cionella, Jeflr., pars., types G. lubrica and (7. 

 acicula'] 



1. Caecilianella acicula, Miiiier. 



15 Bonn, Paris, Grenoble, and Naples ; coll. G. Nevill, Esq. 



var. 

 5 Godalming and Scarborough ; coll. G. Nevill, Esq. 



2. Caecilianella (?), n. sp., (prox. CUsseZ*', Palad.). 



A very handsome species, with truncate columella. 

 1 Aden ; ex c. Dr. F. Stoliczka. 



3. Caecilianella (?), n. sp. 



I know of no Mollusk resembling this peculiar form ; but 

 for Mr. A. Adam's label, I should have supposed it to be marine ! 

 The columella is not truncate, the margins of aperture being 

 entire. 



1 Japan ; coll. A. Ad., ex Damon, with label " Vertigo, n. sp.," in Mr. 

 Adam's own handwriting 1 



Sub-Genus GEOSTILBIA, Crosse (type G. caledonica, Crs.). 



4. Caecilianella (Geostilbia) balanus, Benson. 



10 Deccan and Sind ; coll. W. T. Blanford, Esq., and W. Theobald, Esq. 

 There are, I think, two distinct species amongst these speci- 

 mens. 



