128 



globose, glassy, rather solid ; sculpture quite smooth ; whorls 6, 

 closely wound, flat above, subangulate above on periphery. 



" Major diam. 9-5, min. 8, alt. axis 3-5, body-whorl 2-8 mm." 

 (Godwin-Austen.) 



Nab. Little Cocos Island, Bay o Bengal. 



The figure represents a discoidal form, not unlike that of 

 M. consepta, with a scarcely exserted spire. The shell is deep and 

 tumid beneath, and the greatest diameter much nearer to the spire 

 than to the base. 



b. Depressedly conoid, more or less lenticular. 



204. Macrochlamys aulopis, Bs. (Helix) A. M. N. If. (3) xi, 1863. 



p. 318; H. 8c T. (Helix) C. I. 1876, pi. 30, figs. 8, 9; Nevill 

 (Nanina), Hand-l i, 1878, p. 32. 



Helix aulopsis, Pfr. Mon. Hel. v, 1868, p. 93; Godwin- Austen 

 (Macrochlamys), P. Z. S. 1895, p. 446. 



Shell openly perforate, subumbilicate, depressedly conoid, len- 

 ticular, smooth, slightly polished, minutely decussated beneath a 

 lens by transverse and rather distinct longitudinal lines both 

 above and below, thin, translucent, greyish-brown horny ; spire 

 conoidal, suture very slightly impressed ; whorls 5, gradually in- 

 creasing, flatly convex above, the last sharply carinate at" the 

 periphery, moderately convex beneath ; aperture oblique, quad- 

 rately lunate, subsecuriform ; peristome thin, columellar margin 

 slightly oblique, carried forward, and triangularly reflected above. 



Major diam. 12, min. 10, alt. 6 mm. 



flab. South Andamnn Island, not common. 



Animal light grey, mottled with a darker shade (Nevill). Right 

 shell-lobe well developed. Teeth on radula +20 . 8 . 1 . 8 . 20 + 

 about. 



205. Macrochlamys pseudaulopis, Godwin-Austen (Nevill, MS.), 



A. M. N. H. (6) ii, 1888, p. 56 ; id. P. Z. S. 1895, p. 447. 



This is distinguished from M. aulopis by rather smaller size, 

 brighter and more rufous-brown colour, by the longitudinal 

 (spiral) sculpture above and below being less strong, and fine and 

 close instead of distant, by the suture being rather deeper, the 

 whorls more convex, the last whorl less sharply keeled and more 

 swollen beneath, the aperture higher in proportion to the breadth, 

 and the columellar margin vertical above and broadly reflected. 



Major diam. 10, min. 8, height 5 mm. 



Hab. South Andaman Island. Common on Mount Harriet 

 (Nevill). 



Animal blackish throughout. 



206. Macrochlamys fcrdiana. Godwin- Austen (Nevttl, MS.), A. M. 



N. H. (6) ii, 1888, p. 5(5 ; id. P. Z. S. 1895, p. 446. 



Shell subobtectly perforate, depressedly conoid, bluntly keeled, 



