SARIKA. — TAPUliOSPXllA. 279 



Shell perforate, depressed, rather solid, without sculpture, 

 \\hite, 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 peripliery and convex beneath ; aperture oblique, broadly 

 lunate ; peristouio blunt, slightly thickened, columellar margin 

 oblique and slightly curved throughout, reflected above. 



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



Hah. Mergui, Burma ; Mergui Archipelago {Ayiderson). 



Hauley has united burmaim 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. BJf. P. Z. S. 190.5, p. 441 : [Godwui-Austen, 

 Mol. Ind. ii, p. 177, pi. Ill, figs. 1-1/ (animal and anatomy)]. 



Type, T. coavallata, Bs. 



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

 Islands. 



Shell depressed, thin, horny, resembhng MacrocJdunujs, 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 

 Macroclilamys. Tajihrosjnni proves to be a very distinct genus, 

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

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

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

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

 absence of the amatorial organ is the strongest point which 

 differentiates it both from Maa-oMamys and Austenia. The penis 

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

 spermatophore.j 



449. Taphrospira convallata, Z?.s. (Helix) ^. M. N. II. (2) xviii, 1856, 

 p. 250 ; Ffr. (Helix) Mon. Hel. iv, 1859, p. 40 ; //. 4- T. (Helix) 

 C. /. 1876, pi. 88, figs. 2, 3 ; Nevill (Xauina), 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 obliquo, 

 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. 144, min. 13, height 8 mm. 



