r.\ W I.. M VY. 71 



Family Ancylidcc- 

 Ancylus, Geoffroy, Trait, Coq. L767, p. 13. 



19. marice, Petterd, P. and P. Roy. Soc. Tas., 1000, p. 1. 



li. Maria Island, possibly a variant of (he next. 



20. tasman ■ . T nisoil Wb< Is, P. and F. Roy. Soc. Tas., 



1875, [>. 70. Hah. Common in strej Hobart. 



PI. X., f. 15-16 

 Ancylastrum, Bourguignat, Jour d Conch. IV.. 1853, p. 

 63 and 170. 



21. cumingianum, Bourguignat, Proc. Zool. Soc. 3 1" 



91. Hedley, Pro. Malac. Soc. 1. L894, p. 118. Ten. 

 Woods, P. and V. R< v. - ... 69. Hab. 



Streams above New Norfolk, al-<> Greal Lake Var. 

 irvina Petterd, P. and P. Roy. Soc. Tas., 1887, p. 

 40, pi. 1 1. H 

 Gundlachia, Pfeiffer, Zeite, Malak, VII., 1849, p. 98. 



22. petterdi. J< 1'. and !>. Roy. Soc. Tas., 



p. 23, L884, p. 216 j. 2, a.b.c. Hab. In a 



pool n. ar I ceston .-I ncylus wou< 



Johnston, op. <;!.. 1888, p. 25 G. beddoi I berd, 

 op. rit., 1887, p. Journ. (!<■ Com h, I V.. 



p. L80. Johnston, op cit. for 1888, pi. facing p. 86. 

 He* ■ . P.L.S.-, N.S.W . 



f. 1-15 Hal.. Old quarry, Brown's River-road. 

 wuodsi is tin immature form. I I have 



only on 



Family Hydrobiidce. 

 Potamopyryus, Stimpson, Am., Journ. Conch 1, 1865, p. 



23. brownii, Petterd, P. and P. I!, v. Soc. Tas., 188? p 



72, (.1. .".. f. II. Bab. Rivers on the North-East Coast. 

 PI. X., f. 17. 



24. d yt rin an, Petterd, Bithynia, Journ. Conch. 1879, p. 



86. II ; . a Bay. Possibly a micromorph of the 



next. PL X., f. 



25. '/"/"'-. Fran nfeld, Eydrobia, Verh. Zool. Bot. Gcsill 



Vienna, xiii., 1863, p. 1025, and xv., 1865. p. 526, 

 pi. 7, 2 figs, ECedley, P.L.S. N.S.W., 1913, p. 2 

 pi. 17, f. 51.= -I. simson ana, Brazier, PL S N S.W., 

 75, p. 76. = pontvilIensis, Ten. -Woods, P. and P. 

 Roy. Soc. Tas., 1875, p. 76; pi. XL, f. I9 = dm 

 binensis, Ten. Woods, op. cit. p. 77. PI. XL, f. 20. 

 earns, lagoon-, and ponds, particularly in the 

 ith-East. I think a study of the figures cited 

 above will support the foregoing synonymy. 



