76 CONTRIBUTIONS FOR SYSTEMATIC CATALOGUE AQUATIC SHELLS. 



A plain, variable and widely distributed shell. It is 

 generally covered with a thick tenacious coating of rusty 

 coloured decomposed conferva?. 



It appears to be distinct from all other described species, 

 and may be recognised by its inflated form and large 

 aperture. 



It is certainly not the immature form of any other species, 

 for I have examined a rather large number from both the 

 localities mentioned. 



Beddomeia Hullii. v. sp. 

 Plate I. Fig. 8. 



ShdJ, small, pyramidally conical, subperforate, thin, pale 

 horn, glossy, obsoletely keeled at the periphery. Whorls 4^, 

 moderately convex. Spire, short, finely marked with lines of 

 growth. Aperture, large, acutely ovate, peristome, thin, 

 continuous, feebly expanded on outer margin. Operculum, 

 thin, horuy, paucispiral. 



Length. 3 ; hreadtJt, 2 mill. 



Habitat — Near the Heazlewood River with B. Belli and 

 P. iiiarrjinata. 



This is a small pale shell with a closer affinity to B. 

 Lodderce, ?nihi, than to any other form, but it is no doubt 

 specifically distinct. I have named it honour of the Rev. 

 Mr. Hull, a gentleman much devoted to natural history 

 studies. 



Brazieria. Neiv Genus. 



Shell globosely rounded, imperforate ; spire small, body- 

 whurl large ; ajjcrturc very oblique, effuse ; outer lij) acute, 

 inner lip thickened ; opercnlmn horny, subspiral. Animal ? 



Brazieria Tasmanica. Tenison-Wuods. 



Plate I. Fig. 1. 



Ampullaria Tasmanica. Tenison-Woods. Pro. Roval Soc. 



Tas., 1876. 

 Affim'cola Tasmauuc. Tenisou-Woods, Tate and Brazier. Pro. 

 Liunean Soc. N.S.W. Vol. VI., 1881. 

 Habitat — Aliundant upon stones in a small tributary of the 

 Arthur River, west of Mount Bischoff (Mr. James Smith). 



When describing this shell the Rev. Tenison-Woods 

 exi»ressed great doubts as to its correct generical ])osition, 

 an<l only ])rovisionally jilaeed it in the genus Ampullaria, of 

 which no Australasian forms have hitherto been discovered. 



