I! II MMIAUI.US. 



163 



the chief point of difference being confined to .1 single character— 

 the position and form of the sutural tube at its terminal end. 

 The form of this tube appears to vary even in the same species, 

 being sometimes upright, at others directed downwards. 



234. Rhaphaulus aborensis, Godivin- Austen. 



Raphaulns aborensis, Godwin-Austen, Rec. Ind. -Mus. viii, 1917, 

 p. 571, text-fig. '2 c. 



Oriqinal description:— '' ^heW elongately cylindrical, solid, not 

 flattened in front, closelv riniate ; sculpture regularly and very 

 closelv costulate; colour bleached; spire high, rather niclined to 

 the right, apex pointed; suture moderately impre-ssed; whorls 6, 

 swolle'n, sides convex; aperture circular; peristome thickened, 

 continuous, the sutural tube turns obliquely downward from the 

 upper outer margin and widens out gradually ; in two specimens 

 out of four it is horizontal. , r, i ■ 



" Major diameter 7-25, minor T'O, alt. axis 14-U mm."- (Godwin- 



A list OX I 



Hah. India : Abor Hills (Oa/.-es); Miri Hills {Waliab S,- Lexvis). 



Four specimens from Eotung are srated to be smaller and more 

 tumid, the largest measuring 12-o x 6-5 mm. 



235. Rhaphaulus assamicus, Godwin-Austen. 



Rhnnhaulus nssamica, Godwin-Austen, Laud & Fresliw. Moll. 

 India, i, 188t>, p. 201, pi. 47, tig. 2 ; Smith, Proc. Malac. Soc. 



iii, 1898. p. 18. . ., , T^ . AT 1 1 



RhcmhrndHS (mamims.Kohek k Miillendoiff, ^achr. Deuts. Malak. 



Ges. xxix. 1897, p. 142 ; id., Uat. Pneuui. 1899, p. 38 ; Kobelt, 



Das Tieireich, Lief. U;, 1902, p. 275. •••loi- 



Jiaphaulus nssamica, Godwin-Austen, Rec. Ind. Mus. viii, IJl., 



p. 570, text-tig. I A. 



Originrd description :— " 8hell elongately cylindrical, solid, rather 

 tumid flattened on the frontal surface of the penultunate whorl; 

 sculpture regularly closely costulate; colour dull umber-brown; 

 suture moderatel/ impressed ; wliorls 6, penultimate the largest 

 with sides flat, the next much smaller and convex; jiperture 

 perpendicular; peristome very thick, double, both continuous, 

 but the outer only has a thin callus on the whorl. 



'• The sutural tube has its origin on the upper outer margin 

 close upon the outer lip, is colourless, and turns sharp downwards 

 behind it, extending to nearly the height of the last whorl. This 

 i)eristomial tube is not a tube in the strict sense of the term, but 

 in section is semicircular, an arch resting upon the body-whorl, 

 which forms tlie diameter. An inner sutural tube follows the 

 suture backwards; it opens internally 3 mm. within the aperture, 

 it is indistinctly shown on the exterior, but the Hues of costulation 

 extend over it. 'differing thus from what is seen in the sinnlar tube 

 in Stre}Haidus blanfordi, Bs. 



m2 



