1867.] DR. J. C. cox ON NEW AUSTRALIAN LAND-SHELLS. 723 



A small dark variety from the last-mentioned locality has the de- 

 cussating striae nearly obsolete. This species may be associated with 

 H. bonibycina, Pfr., although not very closely allied to it. 



3. Helix dieMenensis, mihi. 



H. testa umlilicata, depresso-orbiculari, discoidea, tenui, trans- 

 lucida, costulis perphirvnis 2)ro)ninulis subareuafis munita, non 

 nitente, sordide lutescente, fasciolis plurimis pallide ritjis ra- 

 diatim ornata ; spira parva, vix pi'ominente, sutin-a mediocri ; 

 amfr. 4^, lente accrescentibiis, convexiusculis, ultimo reyulariter 

 rotundo-convexo, no)i descendente ; lanbilico ^ diametri cequante ; 

 apertura obliqua, lunata ; peristotnate tenui, recto. 



Diam. maj. 0*37, inin. 0*33, alt. 0*14 unc. 



Hab. Tasmania. 



The two specimens in my collection are both imperfect in the 

 mouth, so that I cannot describe the upper part of the columella. 



4. Helix wellingtonensis, mihi. 



H. testa umbilicata, depresso-orbiculari, subdiscoidea, tenui, cos- 

 tulis flosis subarcuatim radiantibus munita, scepe uscpie ad 

 umbilicum extendentibus, non nitente, vitreo-albo ad sordide 

 luteum variante ; spira parva, vix elevata ; anfr. 4, leiite ac- 

 crescentibiis, modice convexis, ultimo prominente, convexo, non 

 descendente ; umbilico perspectivo, i diametri cequante ; aper- 

 tura modice obliqua, lunata ; peristomate simplici, tenui, 

 recto, marginihus conniventibus, columellari non dilatato, nee 

 refiexo. 

 Diam. maj. 027, min. 0*23, alt. 014 unc. 

 Hab. Mount Wellington, Tasmania. 



Closely allied to //. diemenensis, but with fewer and more thread- 

 like ribs, besides differing in other respects. This shell and H. ha- 

 miltoni were both presented to me while in Tasmania with the spe- 

 cific names now given (by whom I know not) attached ; but I have 

 no reason to suppose that descriptions of them have ever been pub- 

 lished. 



5. Helix albanensis, mihi, 



H. testa umbilicata, dejjresso-convexa, arcuatitn acute fiexuoso- 

 costata, solidiuscula, hand nitida, flavescente, superne fasciis 

 plurimis rubro-fuscis brevibus radiantibus ornata ; spira modice 

 conoidea, obtusa, sutura impressa ; anfractibus 5, lente accres- 

 centibus, subconvexis, ultimo rotundato, ad os subinjlato ; um- 

 bilico perspectivo, ^ diametri occupants ; apertura rotundato- 

 lunata, modice obliqua ; peristomate tenui, simplici, marginibus 

 conniventibus, callo tenui junctis. 



Diam. maj. 0*20, min. O'lS, alt. 0*12 mic. 



Hab. Port Albany, Western Australia (Masters). 



This would come under the subgenus Discus, along with H. 

 cygnea, Bens., and //. sublesta, Bens., of the same colonv, but is 



