AUSTRALIAN GOBIIDjE — McCDLLOCH AND OGILBY. 257 



Habits. — An account of the interesting habits of this species is given 

 by one of us in the Proceedings of the Royal Society of Queensland, xxiii., 

 p. 26. 



Locs. — Port Jackson ; Macleay Museum, cotypes of G. cristatns, Mac- 

 leay. Fourteen other specimens, 47-108 mm. long are in the Australian 

 Museum from Port Jackson, Port Hunter, Port Macquarie, and the Rich- 

 mond River estuaiy. New South Wales ; Caloundra, Queensland. 



Genus OxYDRlCHTHTg, Bleeher. 

 O.rynrichthys (Bleeker), Weber, " Siboga" Exped., Ivii., 1913, p. 475. 



a. No orbital tentacle or nuchal crest papuensis. 



aa. An orbital tentacle and a nuchal crest cornntus. 



OxYORiCHTHYS PAPUENSIS, Guvier ^ Valenciennes. 



Gohius papuensis, Cuvier & Valenciennes, Hist. Nat. Poiss., xii., 1837, p. 

 106. Id., Gunther, Brit. Mus. Cat. Fish., iii., 1861, p. 49. 



This species has been recorded from Australia by Giinther. 



OxYURiCHTHYS coRNUTus, McGulloch Sf Waite. 



Oxyurichthys cornntus, McCulloch & Waite, Rec. S.Austr. Mus., i. 1, 1918, 

 p. 80, pi. viii., fig. 2. 



Loc. — Cairns, Queensland. 



(GOBIUS) EREMIUS, Zietz. 



Gohius eremvus, Zietz, Rept. Horn. Exped., ii., 1896, p. 180, pi. xvi., fig. 5. 

 Id., McCulloch, Rec. Austr. Mus., xi. 7, 1917, p. 183, pi. xxxi., fig. 1, 



Hah. — Fresh water. Central Australia. 



Subfamily Eleotrinae. 



Base of the pectoral fin not unusually muscular or mobile. Eyes not 

 erectile. Ventral fins separate. 



Provisional key to the Australian genera known to the authors. 



a. Ventral rays i/4. 



h. Body elongate, scales minute; dorsal rays about vi/29 Ptet-eleotris. 



bb. Body short, scales large; dorsal raj's about vi/9-10 Eviota. 



aa. Ventral rays i/5. 

 c. Scales small, more than 50 in a longitudinal row. 



d. Sides of head naked Valenciennea. 



del. Sides of head scaly. 

 e. Preoperculum without a spine at the angle. 

 /. Body scales cycloid ; jaws with large canines Odonteleotns. 



