Land- Shells from the Andaman and Nicobar Islands. 61 



Macrochlamys choinix, Benson. 



" Animal very active, throughout black, except the sole of 

 foot, which is white ^' {Nevill). 



3facrochlam7/s? pseudaulopts, n. sp. (Nevill, MS.). 



Loc. South Andaman. 



Shell depressedly conoid, subcarinate, umbilicated, polished; 

 sculpture well-defined, parallel continuous striation, crossed 

 by transverse lines, in some specimens having an indistinct 

 ribbing ; colour rich umber-brown ; spire subconical, apex 

 bluntly rounded ; suture impressed ; whorls 5, very gradually 

 increasing ; aperture quadrately oval, oblique ; peristome thin, 

 columellar margin subvertical. 



Size : maj. diam. 10"0, min. 9*2, alt. axis 4*2 millim. 



Animal from the dried specimens after soaking has a long 

 right shell-lobe. 



The shell of this species differs from M. aulopis, for which 

 it might be mistaken on a casual examination, in tlie whorls 

 being quite convex ; also in the sculpture, M. aulopis being 

 almost decussate. 



In Nevill's copy of his Hand-list I find the following note 

 under this MS. name to no. 108 : — " Closely allied to N. 

 aulopis, with which it is usually confounded ; the animal is 

 quite different, being of a black hue throughout instead of 

 light grey mottled with a darker shade, as is the true N. 

 aulopis of Benson. Common on Mt. Harriet." 



Macrochlamys perinconspicua, n. sp. (Nevill, MS.). 



Loc. Little Brother Andaman (De Roepstorff). 



Shell subglobosely conoid, well umbilicated, rather solid 

 for its size, surface polished ; sculpture very fine parallel 

 longitudinal stri^ under lens ; colour umber-brown ; spire 

 moderately high, apex rounded ; suture shallow ; whorls 5, 

 adpressed, increasing evenly ; aperture ovate ; peristome thin, 

 well rounded below, columellar margin perpendicular, scarcely 

 reflected. 



Largest sp. : maj. diam. 7*5, min. 7*0, alt. axis 3"5 inches. 



Generally : „ Q-5, „ 6*0, „ 3*25 „ 



This is no. 184 of Nevill's revised Hand-list of shells in the 

 Indian Museum, Calcutta. 



Microcystina Hochstetteri, n. sp. 

 Loc. Nicobars, precise island not indicated [De Roepstorff) . 



