24 TIARIDJE. 



Var. D. Anfractuum superiorum costulis obsoletis, ultimi et 

 penultirai liris transversis costulis longitudinalibusque superne 

 serie duplici nodulosis. 



Benson further adds : " Varieties B, C, and D are in the 

 Silhet collection. The type specimens of several of these varieties 

 would, if viewed apart, be easily mistaken for distinct species, but 

 they melt into each other so gradually, occasionally showing the 

 characters of more than one variety combined in the same shell, 

 that no doubt remains of their blending in one species. In 

 Tolly's Nullah I took larger specimens than any in the collection 

 [Museum of the Asiatic Society] ; though at least four twists of 

 the spire were defective, one individual measured 3'4 inches in 

 length. The Gumti specimens are less liable to truncation, and 

 in young specimens the apices are nearly perfect. I have not 

 observed more than 12 whorls present in any specimen. I de- 

 scribed the type of the species without a name as species A in the 

 13th no. of the ' Gleanings in Science.' It was figured as no. 7 

 in plate vii. vol. i." 



Subvar. cincta (Hanley $ Theobald), H. & T., C. I. pi. 109, 

 fig. 5 ; JXevill, Hand List, pt. 2, p. 252. 



The ribs in this variety show a strong tendency to become 

 spinose. 



Alt. 58, diam. 19 mm. (fig. in Conch. Ind.). 

 Hob. Assam (Bacon} ; Eaniganj (StoliczJca). 



Subvar. subtuberculata, Nevill, torn. cit. 



" Aperture relatively very small, almost round ; last two whorls 

 with scarcely any sculpture/' (Nevill.) 

 Alt. 36, diam. 12-5 mm. 

 Hob. Calcutta (Stoliczlca). 



Subvar. subspinosa, Nevttl, torn. cit. p. 253. 



No other description given than that implied by the name. 

 Hob. Tank opposite Bengal Club, Calcutta (Nevill). 



Var. subvaricosa, Nevill, torn. cit. 



Appears to be more or less varicose. 



Alt. 65'5, diam. 24*mm. 



Hob. Arakan and Pegu ? (StoliczJca}. 



Var. fasciata, Nevill, torn. cit. p. 256. 



Having " a somewhat indistinct brown band in the middle of 

 the whorls, two at base; substance rather thin, outer lip not 

 acutely angled at base, although angled at the periphery; no 

 tendency to posses a raised keel there, as is often the case." 



Alt. 33, diam. 17 mm. (4 remaining whorls). 



Hob. Bhootan (StoliczTca). 



