268 MK. E. A. SMITH ON THE 



" The operculum is somewhat calcareous, like Bithinia tenta- 

 culata" {Try on). 



This genus requires further investigation in order to demon- 

 strate its distinctness from Bithinia. 



GrenUS PALTJDIlirELLA ? 



28. PAiiUDiNELLA GriLEsi, Angas. 



Paludinella Gilesi, Angas, Proc. Zool. Soc. 1877, p. 1/0, pi. xxvi. 

 fig. 2. 



Mai. Lake Eyre, South Australia. 



The operculum of this species is described by Angas as " horny, 

 paucispiral, with the nucleus subcentral," I have examined the 

 only operculum accompanying four specimens, among them being 

 the type, liberally presented to the British Museum by Mr. G. 

 E. Angas ; and it proves to be more of a concentric character, as 

 in the genus Vivipara, with the exception of the subcentral 

 nucleus, which exhibits about two spiral turns. 



G-enus Amnicola ? 



29. Amntcola geantjm, Ilenhe. 



Paludina granutn, Menhe, Moll. Nov. Holl. p. 8 ; Philippi, Abbild. i. 



p. 6, pi. i. fig. 16; Kuster, Con.-Cab. p. 64, pi. xi. figs. 37-38. 

 Amn'icola granum, Frauenfeld, Verhandl. zool.-hotan. Vereins fVien, 



1864, pp. 611 & 663. 

 Sab. Among white quartz-sand on the banks of the Swan 

 Eiver {MenJce). 



The generic position of this little shell is at present doubtful, 

 and it is unknown whether it is a marine or fluviatile form. 



Genus Tatea. 



30. Tatea ettfilabris, A. Adams. (Plate VII. fig. 19.) 

 Diala rufilabris, A. Ad. Ann. ^- Mag. Nat. Hist. 1862, p. 298. 

 Hydrobia rufilabris. Smith, Proc. Zool. Soc. 1875, p. 538. 



Bychinia huonensis, Tenison-Woods, Proc. Roy. Soc. Tasm. 1875, p. 71 ; 

 id. Trans. Roy. Soc. Victoria, 1878, vol. xiv. p. 62; Petterd, Journ. 

 Conch, vol. ii. p. 93 (Bithynia). 

 Tatea huonensis, Tenison- Woods, op. cit. 1878, p. 72. 

 Sab. Port Lincoln (Adams) ; South Grafton, Clarence E-iver, 

 New South Wales (Brazier); Huon E.iver, Tasmania (Tenison- 

 Woods 4' Beddome); Melbourne, Victoria (Petterd; also Teni- 

 son- Woods). 



