APPENDIX. 377 



livida^ peristoma expansum, reflexum, sordide violaceum, 

 margine externo sinuato, columellari incrassato, dilatato, 

 subsulcato. Diani. 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 ^^dth 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, solida, 

 striata, sub epidermide fulvo-alba, fasciis castaneis cingu- 

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

 vexiusculi ; apertura subcircularis ; peristoma nigrum, 

 expansum, margine basali reflexo, columellari dilatato, 

 umbilicum subtegente. Diam. maj. 37, min. 27, alt. 25, 

 mill. (Mus. Brit.) 



Tliis handsome species is of a rich fulvous hue, with 

 dark chestnut bands and a deep chestnut umbilicus, partly 

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

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

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

 and stones at Port MoUe, 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. 



