APPENDIX. 377 



livida_, peristoma expansum^ reflexum^ sordide violaceum, 

 margine externo siniiato, columellari incrassato, dilatato, 

 subsulcato. Diam. maj. 26, min. 21, alt. 20, mill. (Mus. 

 Brit.) 



This remarkable snail has a tendency towards a trochi- 

 form contour. The ground colour appears as a white 

 band on the body whorl marking its most prominent 

 portion just below the centre. The sinuation of the 

 outer lip and impression of the whorl behind the peristome, 

 give a sHghtly ringent aspect to the mouth. It is very 

 distinct from any known species ; its affinities are more 

 with Australian than with Philippine forms. It was 

 taken on a tree in the South-East Island of the Louisiade 

 Archipelago. 



Helix Yulei. Tab. ii. fig. 6, a, b. 



Testa profunde umbilicata, depresso- globosa, solid a, 

 striata, sub epidermide fulvo-alba, fasciis castaneis cing-u- 

 lata; spira sub-depressa, obtusa; anfractus 6 con- 

 vexiusculi ; apertura subcircularis ; peristoma nigrum, 

 expansum, margine basali reflexo, columeUari dilatato, 

 umbiHcum subtegente. Diam. maj. 37^ min. 27, alt. 25, 

 mill. (Mus. Brit.) 



This handsome species is of a rich fulvous hue, with 

 dark chestnut bands and a deep chestnut umbiHcus, partly 

 covered by the reflexion of the nearly black lip. It is 

 allied to the H. Incei, a well known north-east Australian 

 species. It was found in hollow trees, and under logs 

 and stones at Port Molle, in the same region. 



Helix Macgillivrayi. Tab. iii. fig. 1. 



Testa imperforata, trochiformis, carinata, striis minutis 

 spiralibus ornata, pallide fusco-carnea, punctis nigris albo- 

 occellatis sparsa ; spira conica ; anfractus 6 planati. 



