BY W. L. MAY. 55 
CITHNA, Adams, Proc. Zool. Soc., 1863, p. 113. 
492—angulata Hedley, Rec. Austr. Mus., vi., 1907, p 
291, pl. .55, f. 16; May, op. cit. for 1912, p. 42. 
Family SYNCERID&. 
SYNCERA, Gray, Med. Repos., London, xv., 1821, p. 239. 
493—brazieri Ten.-Woods, Rissoa, Proc. Roy. Soc. Tasm. 
for 1875, p. 146; Tryon, Man. Conch., ix., p. 335, 
ple al wees Uae 
494—tasmanica Ten.-Woods, Assiminia, op. cit., p. 79; 
Hedley, ,P.Tu8: NiS. W),. xxx). 1906 hip) S20; pl. 
32, f. 27-29; = Rissoa sienne Ten.-Woods. op. cit. 
for 1876, p. 153, = A. bicincta Petterd, op. cit. 
for 1888, p. 77, pl. 2, f. 4, = australis Tate in 
Petterd, op. cit., pl. 3, f. 10. 
oO Se ee Oe oe aS ere 
TATZA, Ten.-Woods, Proc. Roy. Soc. Tasm. for 1878, p. 72. 
495—rufilabris Adams, Diala, Ann. Mag. Nat. Hist. (3), 
x., 1862, p. 298; Smith, Journ. Linn. Soc. Zool., 
Xvi, Le6ls pe 268; “phy-7,) fo 18s =) Bythinia 
huonensis Ten.-Woods, op. cit. for 1875, p. 77. 
POTAMOPY RGUS, Stimpson, Am. Journ. Conch., 1., 1865, 
p. 53. 
496—brownu Petterd, Proc. Roy. Soc. Tasm. for 1888, p. 
1, pl:-3, f. 14; May, Proc. Roy. ‘Soc. Tasm., 
1920p WL pl) LO5 of LT. 
497—dyeriana Petterd, Bithynia, Journ. Conch., 1879. p. 
86; May, op. cit., p. 71, pl. 10) f. 1s. 
498—elongatus May, Proc. Roy. Soc. Tasm., 1920, p. 72, 
pla £272 
499—gunnu Frauenfeld, Hydrobia, Verh. Zool. Bot. 
Gesell, Vienna, xii., 1863, p. 1025, and xv., 
tS6are0 ps o20, | pl. 7 (2. \ tes.) VEledley, 
ELEBS ONS Wie LOLS, (D260, ple hi th pole i 
A. simsoniana Brazier, P.L.S.N.S.W., 1875, = 
B. pontvillensis Ten.-Woods, Proc. Roy. Soc. 
Tasm. for 1875, p. 76; May, op. cit., p. 71, pl. 
11, f. 19, = dunrobinensis Ten.-Woods, op. cit., 
p. 77; May, op. cit., pl. 11, f. 20. 
500—marginata Petterd, Proc. Roy. Soc. Tasm. for 1888, 
pf ,¢pls pt. so Mays Opimett: ps 12, ple it, 
f. 22. 
