PETTERD : ON SOME NEW TASMANIAN HELICES. 213 



suture impressed, last large and inflated ; aperture lunately- 

 ovate ; peristome thin ; margins approximating, right some- 

 what depressed, columellar margin a little expanded. 

 Diam., greatest ii, least 9 ; height 4 mil. 

 Habitat — Table Cape, scrubs among decaying timber, 

 A distinct species belonging to the group of Helix 

 Hamiltoni Cox and H. Stepheusi Cox, but differs from any 

 by its coloration and prominent riblets above and below. 

 Rare and restricted to the locality given. 



7. H. rosacea, n. sp. 



Shell widely umbilicated, depressed, rusty-brown, indi- 

 stinctly rayed with darker shade, dull, irregularly somewhat 

 closely striated with rounded and slightly waved striae, 

 interstices with very fine striae; spire flat; suture impressed; 

 whorls 5, convex, last rounded, a little descending; base 

 convex, ornamented with striations the same as upper surface; 

 umbilicus large and very open, somewhat shallow and flat 

 at the bottom ; aperture ovately-lunate, slightly flattened 

 above; margins approaching; peristome simple, acute. 



Diam., greatest 6, least 5; height 2 mil. 



Habitat — Rifle-butts near Launceston, in great numbers; 

 gregarious at the roots of Briar-bushes. (R. M. Johnston). 



Closely allied to H. Legrandi Cox and H. McDonaldi Cox, 

 but diffCirs principally from either in its very open umbilicus 

 and the coloration. It is individually one of the most 

 abundant species I have met with in this island, it may 

 literally be collected by thousands at the locahty given, 

 where it was first observed by Mr. R. M. Johnston. I have 

 not, strange to say, met with it elsewhere. 



8. H. Jungermanniae, n. sp. 



Shell small, with a narrow deep umbilicus, thin, obliquely, 

 strongly and irregularly striated with lines of growth and 



