Species o/Amphidromus, Alters. 77 



so dark as to hide the characteristic forked markings. Mar- 

 tens's virescens is simply furcillatus in good condition. The 

 narrow sutural band is yellow in most specimens, but some- 

 times of a pink colour. 



A. furcillatus, var. andamanica (Thorpe, MSS.), Hanley and 

 Theobald, Con. Ind. 1876, pi. cxlviii. fig. 10. 

 =andamamcus, var. nicobarica, Godwin- Austen, P. Z. S. 1895, p. 450. 



Loc. Andaman Islands ; Katcliall, Nicobar Islands. 



Near furcillatus^ but the markings on the last whorl are 

 not forked, and the narrow sutural band is reddish brown, not 

 yellow, as in most specimens of furcillatus. The var. 

 nicoharica, Godw.-Austen, is founded upon a light-coloured 

 specimen ; but specimens of andamanicus vary from very 

 light to quite a dark colour. 



Group of K. contrarius. 



24. A. poeciloehroa (Boettger, MSS.), Fulton. (PI. VI. 

 fig. 7.) 



Loc. Sumbawa Island. 



Shell sinistral, ovate-conic, thin, obliquely striate, sbining, 

 almost or quite imperforate, lemon-colour, with oblique dark 

 brown stripes, which are interrupted by a spiral yellow band ; 

 lower part of last whorl encircled by three dark brown bands, 

 which are separated by two other bands, the lower broad and 

 light red, the upper narrow and of a yellow colour ; whorls 6, 

 slightly convex ; columella thin, straight ; lip slightly ex- 

 panded, flesh-coloured. 



Long. 35 millim., maj. diam. 19 millim. 



At first I thought this to be the typical contrarius as figured 

 in Chemnitz, which figure (except for its thin columella) it 

 very much resembles. After sending specimens to Copen- 

 hagen for comparison with Miiller's type, I find that the 

 generally accepted form of cotitrartus is the true one, a good 

 figure of which appears in the ' Voy. au Pole Sud ' by Homb. 

 & Jacq. pi. viii. fig. 1, and that poeciloehroa is distinct from 

 that species. 



25. A. contrarius, Miiller, Hist. Verm. ii. p. 95. no. 292. 



=H. inierrupta-sintstrorsa, Chem. vol. ix. figs. 938, 939. 

 =inter)-uptus, Homb. et Jacq. Voy. au Pole Bud, pi. viii. fig. 1. 



Loc. Timor Island. 



This species varies greatly in form, but can be distin- 



