FISHES OF THE PHILIPPINE ISLANDS AND ADJACENT SEAS 325 



1% to 1%; claspers narrow, slender, reach % to hind ventral ends. 



Uniform brown above, paler to whitish below. 



Queensland, New South Wales. Related to Rhinohatos philippi 

 but differs in its much smoother body, especially in the comparatively 

 inconspicuous vertebral and shoulder tubercles. 



U.S.N.M. No. 40030. Port Jackson. Australian Museum. Length, 167 to 170 



mm. 4 examples. 

 U.S.N.M. No. 84371. Queensland. Endeavour collection. Length, 455 mm. As 



Rhinobattis tanksii. 

 U.S.N.M. No. 39984. Port Jackson. Australian Museum. Length, 845 mm. 

 U.S.N.IM. No. 39986. Port Jackson. Australian Museum Length, 805 mm. 



Genus TRYGONORRHINA Muller and Henle 



Trygonorrhina Mtjixer and Henle, Ann. Mag. Nat. Hist. Charlesworth, new 



ser., vol. 2, p. 90, 1938. (Atypic: Type, Trygmiorhina fasciata Miiller and 



Henle.) 

 Trygonorhinn MiiLi^R and Henle, Beschr. Plagiostompn, p. 124, 1841. (Type, 



Trygonorhina fasciata Muller and Henle, monotypic.) 

 Trigonorhina Gray, List fish Brit. Mus., p. 98, 1851. (Type, Trygonorhina 



fasciata Muller and Henle.) 

 TrigonorrJiwa Garman. Mem. Mus. Comp. Zool., vol. 36, p. 287, 1913. (Type, 



TrygonorMna fasciata Miiller and Henle.) 



Disk wide, shorter than tail. Tail not broad at base, moderately 

 slender. Rostral cartilages strong, wide at fontanel, tapering 

 blunted. Nasal valves confluent in wide quadrangular flap, forming 

 front edge of mouth, free on lateral edges behind nostrils. Spiracle 

 large, close to eye, with fold. Dorsals remote from ventral bases. 

 Subcaudal not lobed. Pectorals not extended in front of nostrils. 

 Ventral origins close to pectoral axils. 



One species in Australia. Fossils known from the Middle Eocene. 



TRYGONORRHINA FASCIATA Muller and Henle 



Trygonorhina fasciata Muller and Henle, Syst. Beschr. Plagiostomen, p. 124, 

 1841 (type locality: New Holland). (On Banks manuscript). — Dum^ril, 

 Hist. Nat. Elasmobr., vol. 1, p. 502, 1865 (West Australia; types).— 

 GtJNTHER, Ann. Mag. Nat. Hist., ser. 8, vol. 20, p. 67, 1867 (New South 

 Wales ?) ; Cat. Fishes British Mus., vol. 8, p. 448, 1870 (Tasmania, South 

 Australia, New South Wales, Sydney). — Castelnau, Proc. Zool. Soc. Vic- 

 toria, vol. 1, p. 223, 1872 (Melbourne market). — Hector, Colonial Mus. 

 Governm. Surv. Dept. (Fishes New Zealand), p. 82, 1872 (compiled). — 

 Schmeltz, Cat. Mus. Godeffroy, No. 5, p. 41, 1874 (Port Mackay). — 

 Macleay, Proc. Linn. Soc. New South Wales, vol. 5, p. 309, 1880 (Tasmania, 

 Victoria, South Australia, New South Wales). — Johnston, Proc. Roy. Soc. 

 Tasmania, 1882, p. 140, 1883.— Haswell, Proc. Linn. Soc. New South Wales, 

 vol. 9, p. 107, pi. 2, figs. 1-5 (skeleton), 1884.— Ogilby, Cat. Fishes New 

 South Wales, p. 5, 1886; Cat Fishes Australian Mus., pt. 1, p. 15, 1888 

 (Port Jackson). — Lucas, Proc. Roy. Soc. Victoria, new ser., vol. 2, p. 45, 

 1890 (south part of Port Phillip). — Johnston, Proc. Roy. Soc. Tasmania, 

 1890, p. 39, 1891.— Hnx, Proc. Linn. Soc. New South Wales, ser. 2, vol. 10, 



