Testa imperforata, globoso-turbinata, solidiuscula, sub lente rugosa, albida, fasciis variis purpureo-fuscis ornata; spira conoidea, rubescens; anfrac. 5 convexiusculi, ultimus magnus, paululum deflexus; apertura ovata, intus nitide livida, peristoma expansum, reflexum, sordide violaceum, margine externo sinuato, 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 slightly 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. n. fig. 6. a, b.
Testa profunde umbilicata, depresso-globosa, solida, striata, sub epidermide fulvo-alba, fasciis castaneis cingulata; spira sub-depressa, obtusa; anfractus 6 convexiusculi; apertura subcircularis; peristoma nigrum, expansum, margine basali reflexo, columellari dilatato, umbilicum 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 umbilicus, 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. 3 fig. 1.
Testa imperforata, trochiformis, carinata, striis minutis spiralibus ornata, pallide fusco-carnea, punctis nigris albo-occellatis sparsa; spira conica; anfractus 6 planati, ultimus carinatus, basi subplanatus; apertura oblique oblonga, intus brunnea, margine externo bisinuato; peristoma album, incrassatum, infra reflexum; columella basi rufescens. Diam. maj. 23, min. 19, alt. 21, mill. (Mus. Brit. and Geol.)
Of all Australian Helices, this is perhaps the most curious. Its outline and aspect are singularly like those of a Trochus of the Ziziphinus group. The colour is also very singular, being a yellowish flesh hue deepening on the base to rich brownish-yellow, and speckled irregularly with minute black dots which are areolated with white, the white ring being largest on the side towards the mouth. The fine striae that encircle the body are also very curious. The outer lip of the aperture seems as if it had been dented in two places. Behind the white thickened peristome, intemaily is a dark brown band, which is seen through the shell as a dark blackish green stripe. The edge of the outer lip declines to join the body whorl a little below the keel. It was found on trunks and branches of trees in the Frankland Isles.
Helix dunkiensis. Tab. 2 fig. 7. a, b.
Testa umbilicata, depresso-globosa, subcarinata, solida, radiato striata et subtilissime granulata, flavida; spira late depressa, convexiuscula, apice obtusa; anfractus 6 convexiusculi, ultimo obsolete carinato; apertura lunaris, intus alba; peristoma superne rectum, margine basali margine columellarique sub-reflexis, umbilicus profundus, conspicuus, vix obtectus. Diam. maj. 24, min. 21, alt. 16, mill. (Mus. Brit.)