BY C. HEDLEY AND H. SUTER. 619 



Fam. Hydrobiid^. 



POTAMOPYRGUS, StimpSOll, 1865. 



Stimpson, Am. Journ. Conch, i. p. 53. 



3 P. CUMINGIANA, Fischer, sp. 1860. 



Syn. — salleana, Fischer, 1860; crossei, Frauenfeld, 1864. 



Ref.— Journ. de Conch, viii. p. 208, pi. iv. ff. 6, 7 ; Mai. Blat. 

 viii. p. 151 ; Conch. Icon. xii. Melania, pi. xlix. f. 366 ; Abhandl. 

 Zool. Bot. Gesellsch. Wien, xiv. p. 595 ; Man. N.Z. Moll. p. 83 ; 

 Trans. N.Z. Inst. xiv. p. 144, pi. i. ff. A, I, 2 (shell), f. E (radula). 



H a b. — North Island ; Lake Takapuna, Auckland, Thames, 

 Forty Mile Bush, Waipua River, Ruaraahanga River, Whangarei, 

 Hillyers Creek, Onehunga Springs, Kowau Island, Hunua Range, 

 Waikato, and Lake Pupake. South Island ; Lake Te Anau. 



4 P. COROLLA, Gould, sp. 1848. 



Syn. — baclia, Gould, 1851 ; fischeri, Dunker, 1862, and reevei, 

 Frauenfeld, 1862. 



Ref.— Proc. Boston Soc. N.H. ii. p. 223; U.S. Expl. Exped. 

 xii. pp. 126, 129, ff. 149, a, b, 150, a, b ; Mai. Blat. viii. p. 152 ; 

 Saiithsonian Miscell. Coll. vii. p. 49 (radula) ; Abhandl. Zool. 

 Bot. Gesellsch. Wien, xiii. p. 1024, xv. p. 526, pi. viil. ; 

 P.L.S.KS.W. (1) iii. p. 136, pi. xiiL ff. 2, 3, 5; Man. N.Z. Moll, 

 pp. 82, 83; Trans. N.Z. Inst. xiv. p. 145, ff. B, 1, 2, (shell), f. F 

 (radula) ; Am. Journ. Conch, i. p. 54 (i-adula), &c. 



H a b. — North and South Islands, Banks Peninsula (Pickering). 



5 P. Antipodardm, Gray (emend.),* sp. 1843. 



Syn. — zelandicB, Gray, 1843; egena, Gould, 1851; gracilis, 

 Gould, 1852 ; and spelaea, Frauenfeld, 1862. 



Ref.— Dieffenbach's N.Z. ii. p. 241 ; Proc. Boston N.H. Soc. iii. 

 p. 75; U.S. Expl. Exped. xii. p. 127, f. 151, a, b; Abhandl. Zool. 



* Originally misspelt antipodanum, but corrected as above. Revue 

 Zoologique, vii. p. 356. 



