SARIKA. TAPHliOSPIEA. 270 



Shell perforate, depressed, rather solid, without sculpture, 

 white, with, a brownish-yellow band above the periphery and 

 inside the suture ; spire low, conoid, suture scarcely impressed ; 

 whorls 7, slightly convex, slowly increasing, the last rounded at 

 the periphery and convex beneath ; aperture oblique, broadly 

 lunate ; peristome blunt, slightly thickened, columellar margin 

 oblique and slightly curved throughout, reflected above. 



Major diarn. 25, min. 23, height 12 mm. 



Hob. Mergui, Burma ; Mergui Archipelago (Anderson). 



Hanley has united burmana and acerra. The spiral band of 

 the former has not been observed in the latter, which is slightly 

 larger and more depressed : 28 x 25 x 11 mm. 



Genus TAPHROSPIRA. 



Taphrospira, W. T. Elf. P. Z. S. 1905, p. 441 : [Godwin- Austen, 

 Mol. 2nd. ii, p. 177, pi. Ill, figs, l-l/ (animal and anatomy)]. 



Type, T. convallata, Bs. 



Range. Assam Hills, Burma, Tenasserim, and the Andaman 

 Islands. 



Shell depressed, thin, horny, resembling Macrochlamys, but with 

 a deep groove just outside the suture throughout the whorls. 



Anatomy not known. 



[For a long time the position shells of this form should fill has 

 been one of considerable doubt ; it was placed provisionally in 

 Macrochlamys. Taphrotpira proves to be a very distinct genus, 

 not only by shell-character, on which Dr. W. T. Blanford founded 

 it, but also still more conclusively on the character of the animal. 

 It is like Macrochlamys only as regards the right shell-lobe ; the 

 ample left shell-lobe resembles that of species of Austenia. The 

 absence of the amatorial organ is the strongest point which 

 differentiates it both from Macrochlamys and Austenia. The penis 

 is more like Austenia than typical Macrochlamys, so also is the 

 spermatophore.] 



449. Taphrospira convallata, Bs. (Helix) A. M. N. H. (2) xviii, 1856, 

 p. 250; Pfr. (Helix) Man. Hel iv, 1859, p. 46; H. $ T. (Helix) 

 C. L 1876, pi. 88, figs. 2, 3 ; Nevill (Nanina), Hand-l i, 1878, 

 p. 28 ; v. Mart. Jour. Linn. Soc. xxi, 1889, p. 162. 



Shell minutely perforate, subglobosely depressed, thin, smooth, 

 greyish horny ; spire depressedly conoid, suture deeply but not 

 broadly canaliculate ; whorls 6-7, closely wound, all except the 

 innermost sharply angulate above near the suture, the last 

 rounded, not descending, convex below; aperture scarcely oblique, 

 lunate, angulate above and with an indentation corresponding to 

 the sutural canal ; peristome thin, slightly arcuate externally and 

 basally, columellar margin oblique, slightly expanded throughout, 

 more broadly above. 



Major diam. 14|, min. 13, height 8 mm. 



