74 FISH AND FISH-LIKE ANIMALS OF N.S.W., 



268b. N. balteatus. Little Rock Whiting. Odax balteatus Cuv. & Val., 

 H. N. Poiss. xiv, 1839. p. 303. 



Not uncommon on Zostera flats in Port Jackson. Length 7 inches. 



An examination of the holotype of Odax brunneus Macleay, shows that it 

 has 38-39 scales on the lateral line, not 30 as described, and that it does not 

 differ from N. balteatus. 



268c. N. obscdrus. Odax obscurus Castelnau, P. Zool. Soc. Vict, i, 1872, 



p. 154. 

 Probably synonymous with the preceding species. 



269. Olisthops Richardson, P. Zool. Soc. 1850, p. 75 (cyanomelas). 



269a. 0. cyanomelas. HerrinCt Cale. Id. Richardson, Ibid., pi. 3, 1-2; 

 Id. McCulloch, Rec. Austr. Mus. xiii. 2, 1920, pi. 14, 3 (PI. xxxi.). 



A rock fish which exhibits great colour variation, the male being usually 

 blackish, while the females are ornamented as in the accompanying figure. Length 

 about 12 inches. 



270. Heteroscarus Castelnau, P. Zool. Soc. Vict, i, 1872, p. 245 [filamen- 

 tosus). 



270a. H. filamentosus. Rainbow-fish. Id. Castelnau, Ibid.; Id. Stein- 

 dachner, Sitzb. Akad. Wiss. Wien lxxxviii. i, 1883, p. 1093, pi. 3, 1 (PI. 

 xxxi.). 



A gorgeously coloured fish which is not uncommon around rocky reefs on 

 the southern portion of the coast. Length about 9 inches. 



(Pseudoscarus octodon Bleeker has been incorrectly recorded from Port Jack- 

 son by Kner, Novara Zool. i, Fische, 1865, p. 262. No member of the family 

 Scaridae is known from the State). 



Gadopsiformes. 

 CXXI. Family Gadopsidae. 



271. Gadopsis Richardson, Iehth. Erebus & Terror, 1848, p. 122 (marmoratus). 

 271a. G. marmoratus. River Blackfish. Id. Richardson, Ibid., pi. 59, 



6-11. Id. Ogilby, Mem. Qld. Mus. ii., 1913, p. 69, pi. xx. (PI. xxxi.). 

 Occurs in the western rivers of New South Wales, and occasionally reaches 

 15 inches in length. 



Champsodontiformes. 

 CXXII. Family Champsodontidae. 



272. Champsodon Gunther, P. Zool. Soc. 1867, p. 102 (vorax). 



The type of C-entropercis nudivittis Ogilby apparently offers no characters 

 to separate it from Champsodoti. 



272a. C. nudivittis. Centropercis nudivittis Ogilby, P.L.S. N.S.W. (2) 

 x, 1895, p. 320; Id. Waite, Mem. Austr. Mus. "iv. i, 1899, p. Ill, pi. 

 11, 2 (PI. xxxii.). 

 A rare species living in moderate depths on muddy ground. Length 4 

 inches. 



Trachiniformes. 

 A. Dorsal fin with an anterior spinous portion. 



B. Lateral line incomplete, not reaching the tail. 



Fam. Opislhognathidae (cxxiii.K 

 BB. Lateral line complete, reaching the tail. Fam. Pinguipedidae (cxxiv.). 



AA. Dorsal fin without spines. 



C. Palate toothless; lateral line near lower surface of body. 



Fam. Creediidai (cxxv.i. 

 CC. Palate with teeth. 



