THE FRESHWATER MOLLUSCA OF VICTORIA 
121 
1886 Physa ciliosa Clessin, MSS., op. cit., p. 351. 
1886 Physa schrayeri Clessin, MSS., op. cit., p. 366. 
1887 Physa hainesii Tryon. Cooke, Journ. Conch., p. 241. 
1917 Isodora hainesii (Tryon). Hedley, Rec. Aust. Mus., xii. No. 1, 
p. 7 (in part). 
Size of Type. — ^Length 9 5 mm. ; breadth, 7 mm. 
Localities. — ^Bairnsdale (Miss E. Clark) ; Bannerton 
(A. C. Nilson); Geelong, Bimboola (J. Mulder); Keilor 
(F. S. Colliver) ; Plenty River, Dandenong (T. Worcester) ; 
Bacchus Marsh (F. L. Billinghurst and E. H. Matthews) ; 
Reservoir Studley Park (C. J. Gabriel). 
Vernacular Name. — Haines’s Pond-Snail. 
Ohservations. — Smaller and more elongate than I. new- 
cojnhi Ad. and Ang. 
Family PLANORBIDE 
Genus PLANORBIS Geoffrey 1767. 
Planorhis tasmanicus Tenison Woods. 
(PI. Ill, Fig. 27, 27a, 27b). 
— Planorhis McCoyi Ten. Woods MS. 
1876 Planorhis tasmanicus Ten. Woods, Pr. Roy. Soc. Tas. for 1875, p. 79. 
1879 Id. Johnston, Pr. Roy. Soc. Tas., for 1877, p. 28. 
1889 Id. Petterd, Pr. Roy. Soc. Tas., for 1888, p. 68, pi. 2, figs. 8, 9. 
1896 Planorhis gilherti Dunker. Fielder, Viet. Nat. xii. No. 11, p. 140. 
1917 Id. Cherry, “Bilharziosis,” p. 4, figs. 7, 7a. 
1920 Planorhis tasmanicus Ten. Woods. May, Pr. Roy. Soc. Tas., p. 
70, pi. 10, figs. 13, 14. 
1921 Id. May, Check-list Moll. Tas., p. 90, No. 885. 
1923 Id. May, 111. Index Tas. Shells, pi. 41, fig. 19. 
Size of Type.— Length 5 mm.; breadth, 3 5 mm.; height, 
1 mm. 
Localities.— WsLThnvton, Oakleigh, Bairnsdale, Melbourne 
Botanic Gardens (Nat. Mus., Melb.) ; R. Murray (J. A. 
Kershaw) ; Heidelberg (Rev. W. Fielder) ; Longford, Tarra- 
ville, Lome (T. Worcester); Lake Hattah (J. E. Bixon) ; 
Geelong (H. W. Bavey) ; Birregurra (A. C. Nilson) ; Mere- 
dith (J. H. Young) ; Sydenham (F. S. Colliver) ; Blackburn 
Lake (A. C. McLachlan) ; Belgrave, Hall’s Gap (C. Oke) ; 
Studley Park Reservoir (C. J. Gabriel). 
Vernacular Name.— Tasmanian Flat-coil or Ram’s horn 
Pond-Snail. 
Ohservations. — These flatly-discoidal little shells are gene- 
rally found harbouring among weeds in stagnant and slow- 
