Land- Shells from New Guinea. 233 



1.. Helix (Chloritis) perambigua. 



Testa //. ephamilhv similis, sed epidermide Isevi, hand setosa amicta, 

 spira paulo altiore, anfractu ultimo minus inflato, peristomate 

 minus expanse. 



Diam. maj. 32 millim., min. 25, alt. 23 ; apertura iutus 12 alta, 

 15 lata. 



There are two specimens of this species, agreeiii.i^ in form 

 and epidermis, but differing in size and colour. The larger 

 one, the dimensions of whicli are given above, is purplish red 

 at the apex, like H. ejjhamilla, the rest of the shell being 

 livid beneath the epidermis. The smaller example is only 

 22 millim. in its greatest diameter and of a purplish red 

 throughout. The epidermis, however, is quite smooth, with 

 the exception of the lines of growth, as in the larger specimen. 

 The aperture in the latter is bluish, and purplish red in the 

 small example. 



The general resemblance of this species to H. ephamilla is 

 so remarkable that, unless carefully observed, its distinctness 

 would be passed by unnoticed. It seems to me, however, 

 that the differences referred to sufficiently separate the two 

 forms. 



8. Helix {Crtstic/ibba) Musgravei. 



Testa H. scmirascr similis, sed minor, fascia angusta unica nigres- 

 cente supra ornata, snperficie minute ct coufertim punctata ; 

 peristomate albido. 



Diam. maj. 14 millim., min. 12, alt. 6|. 



Uab. Back of Cloudy Bay. 



This species, H. semirasa, and H. leptochila are closely 

 related. H. semirasa resembles the present species in form, 

 but differs in size, sculpture, banding, and colour of the peri- 

 stome. H. leptochila, Canefri, from the Molucca Islands, is 

 larger, has a broader colour-band above, a rosy peristome, 

 and, judging by the figure, is of a different form. In this 

 species the pitting of the surface (indication of a pilose epi- 

 dermis) is very minute and close, but in //. semirasa \t is 

 comparatively scattered and remote. No mention is made by 

 Canefri of this kind of sculpture upon //. leptochila ; but, 

 being difficult of observation, it may have been overlooked. 



