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Show 722 DR. J. C. C O X O N N E W AUSTRALIAN LAND-SHELLS. [June 27, 9. O n some New Species of Australian Land-Shells. By J A M E S C. Cox, M.D., F.R.C.S. Edin., Secretary of the Entomological Society of N e w South Wales. Since the issue (in 1864) of a 'Catalogue of Australian Land- Shells ' in my collection, in which many supposed new species were described, I have from time to time transmitted, for publication in the ' Proceedings' of the Society, descriptions of such others as appeared to me to be novelties; and I now send a further contribution to the same effect. I mention that a work which I am now preparing for the press, in which all the Australian Land-Shells known to me will be described (in English) and represented by coloured plates, will, I trust, be published before any considerable number of new shells can have come before me, even supported as I have been and still am by the contributions of collectors in all the Australian colonies. However, by next mail I hope to be able to send descriptions of some more undescribed species. 1. HELIX LAMPROIDES, mihi. H. testa umbilicata, convexo-depressa, tenui, conferte et irregulariter costato-striata, supra vix nitida, infra nitidiore, corneo-rufescente, subtus piallidiore ; spira parvula, convexiuscula, anfr. 4, celeriter accrescentibus, ultimo non descendente, supra depresso, infra convexo, obtuse angulato ; apertura obliqua, rotundato-lunata; peristomate simplici, tenui, marginibus conniventibus, dextro recto, antice angulato, columellari arcuato, non dilatato, nee refiexo. Diam. maj. 0*57, min. 0*50, alt. 0*22 une. Hab. North-western coast of Tasmania. Closely allied to H. lampra, Pfr., but more coarsely sculptured and wanting the extreme polish of that species, besides being obtusely carinated, and having the aperture angular externally. 2. HELIX HAMILTONI, mihi. H. testa umbilicata, subdiscoidea, convexo-depressa, tenui, conferte subarcuatim costulata, interstitiis tenuissime filosis, lineis minutissimis spiralibus cceteras decussantibus, faciem (sub lente) lineato-granulatam exhibente, haud nitida, pallide rufes-cente- cornea ; spira parva, vix prominente, interdum planata, sutura impressa; anfr. 5, celeriter accrescentibus, planato-convexiusculis, ultimo subinflato, rotundo-convexo, non antice descendente, ad os supra modice planato, basi striis minoribus munito ; umbilico perspectivo, fere ^ diametri eequante; apertura diagonali, ovato-lunari ; peristomate simplici, tenui, recto, marginibus conniventibus, columellari supra modice dilatato et reflexo. Diam. maj. 0*53, min. 0*45, alt. 0*20 une. Hab. Mount Wellington, Macquarie Harbour, and north-eastern coast of Tasmania. |