56 Lieut.-Col. H. H. Godwin- Austen on new 



MacJirochlam7/s ? bathi/charax, Benson, MS. 

 Belir bathycharax, Tlieob. Cat. Supp. p. 17. 



Loc. South Andaman Island. 



Shell discoid, narrowly umbilicated ; sculpture polished to 

 the eye, under lens some fine indistinct longitudinal stria ; 

 colour pale sienna-brown ; spire very low, flat above, apex 

 flat ; suture canaliculate ; whorls 5|, specimen young ; aper- 

 ture and peristome not fully developed. 



Size : maj. diam. 10'75, alt. axis 5*0 millim. 



This is no. 69 of G. Nevill's Hand-list, p. 27, as Nanina. 



It is a very near ally of H. convallata^ Benson (Ann. & 

 Mag. Nat. Hist. 1856, vol. xviii. p. 250). I have not com- 

 pared them. Nevill puts it on one label in De KoepstorfF's 

 collection as a variety of it. 



In a revised catalogue of Nevill's Hand-list, which he sent 

 to me a few weeks previous to his death, he has : — 



"No. 123. Nanina subconvallata. 2 sp. Nicobars. Coll. 

 F. A. de KoepstorfF, Esq. 



" No. 120. Nanina hathycJiarax, Bs. MS. S. Andamans. 

 14 sp. Collected by Wood-Mason, Nevill, Stoliczka, and 

 De KoepstorfF. 



" No. 124. convallata, var. ? n. sp. Euomphalus. More 

 openly umbilicated. 10 sp. Andamans. F. A, de Eoep- 

 storfF." 



Macrochlamys Fordiana^ n. sp. (Nevill, MS.). 



Loc. South Andaman. 



Shell subcarinate, subglobosely conoid, narrowly umbili- 

 cated ; sculpture close, regular, wavy, transverse ribbing, no 

 longitudinal striation ; colour pale horny ; spire subconoid, 

 apex rounded ; suture shallow ; whorls 5, regularly increasing, 

 subconvex ; aperture ovate ; peristome thin, columellar mar- 

 gin reflected abruptly over the umbilicus. 



Size: maj. diam. 18'7, min. 16'3, alt. axis 8*2, body- whorl 

 7'8 millim. 



This form differs from its nearest ally in these islands, M. 

 choinix, in its sculpture ; the latter is smooth and polished, 

 with fine longitudinal striation ; in M. choinix the body-whoil 

 is more inflated and the whorls and apex flatter and closer 

 wound near the apex. M. exul, another near form, is a 

 closer-whorled shell and wath different sculpture. 



Macrochlamys stephus, Benson. 



" Animal throughout yellow, except the tentacles, which 

 are black ; sole of foot also yellow " (Neinll). 



