378 APPENDIX. 



ultimus carinatus^ basi subplanatus ; apertura oblique 

 oblonga^ intus brunnea^ margine externo bisinuato ; peris- 

 toma album, incrassatum, infra reflexum ; columella basi 

 rufescens. Diam. maj. 23, min. 19, alt. 21, mill. (Mus. 

 Brit, and GeoL) 



Of all Australian Helices, tbis is perhaps tbe most 

 curious. Its outline and aspect are singularly like those 

 of a Trochus of tlie 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 strise 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, internally 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. ii. fig. 7- a, b. 



Testa umbihcata, depresso-globosa, subcarinata, solida, 

 radiato striata et subtilissime granulata, flavida ; spira late 

 depressa, convexiuscula, apice obtusa ; anfractus 6 con- 

 vexiusculi, ultimo obsolete carinato ; apertura lunaris, 

 intus alba; peristoma superne rectum, margine basali 

 margine columellarique sub-reflexis, umbiHcus profundus, 

 conspicuus, vix obtectus. Diam. maj. 24, min. 21, alt. 16, 

 mill. (Mus. Brit.) 



This snail strikingly resembles some lUyrian forms. It 

 has affinities with H. coriaria, a species said to be from 

 Ceylon. It was taken under stones and about roots of 

 trees in Dunk Island, on the N.E. coast of Australia. 



