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



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

 cussating striae nearly obsolete. This species may be associated with 

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



3. Helix diemenensis, mihi. 



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

 lucida, costtdis perplurimis promimdis subarcuafis munita, non 

 mtente, sordide lutescente, fasciolis plurimis pallide riifis ra- 

 diatim ornata ; spira parva, vix prominent e, sutura mediocri ; 

 anfr. 4\, lente accrescentibus, convexiusculis, ultimo regularite'r 

 rotundo-convexo, non descendente; umbilico \ diametri oequante ; 

 apertura obliqua, lunata ; peristomate tenui, recto. 



Diam. maj. 037, min. 033, 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 tmtnita, scepe usque ad 

 nmbilicum extendentibus, non nitente, vitreo-albo ad sordide 

 luteum variante ; spira parva, vix elevata ; anfr. A, lente ac- 

 crescentibus, modice convexis, ultimo prominente, convexo, non 

 descendente; umbilico perspectivo, -L diametri cequante ; aper- 

 tura modice obliqua, lunata; peristomate simplici, tenui, 

 recto, marginihus conniventibus, columellari non dilatato, ne'e 

 refiexo. 

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

 Hab. Mount Wellington, Tasmania. 



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

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

 miltom 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. 



II. testa mnbilicata, depresso-convexa, arcuatim acute flexuoso- 

 costata, sohdiuscida, hand nitida, fiavescente, 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 occupant e ; apertura rotundato- 

 lunata, modice obliqua ; jjeristomate tenui, simplici, marainibus 

 conniventibus, callo tenui junctis. 



Diam. maj. 0-20, min. 0-18, alt. 0-12 unc. 



Hab. Port Albany, Western Australia {Masters). 



This would come under the suljgenus Discus, along with H 

 cygneu, Bens., and //. sublesta, Bens., of the same colony, but is 



