110 DESCRIPTIVE CATALOGUE OF AUSTRALIAN FISHES, 



Height of body one-fifth of the total length ; prjeoperculum 

 rounded, and finely crenulated ; caudal fin rounded ; ventrals 

 close together, the space between covered by two long, pointed 

 scales. Colour chocolate-brown, the fins redder, five or six series 

 of small spots on the dorsal fin. 



Port Jackson. Length three and a-half inches. 



Genus Olistiierops, Richards. 



Head entirely naked ; scales of moderate size ; lateral line 

 continuous ; snout of moderate extent ; dorsal spines numerous, 

 flexible. Teeth as in Odax. 



Australia. 



760. Olistherops cyanomelas, Richards. 



Ann. and Mag. Nat. Hist., 1851, p. 291.— Gunth., Cat. Fishes 



IV., p. 243. 



D. 18/10. A. 3/10. L. lat. 48. L. transv. 7/14. 



The height of the body is contained five times and a-half in 

 the total length. Blackish-green : a bluish streak along the 

 upper and lower margins of the caudal and along the upper 

 margin of the pectoral fins. 



Melbourne. King George's Sound. 



This species is subject to very great variations in colour, 

 seeming to change at different seasons. The following species I 

 believe to be distinct, though placed by Count Castelnau as a 

 synonym of 0. ojanomelas. 



761. Olistherops brunneus, Macl. 

 Proc. Linn. Soc. N.S. Wales, Yol. III., p. 36, pi. 5, fig. 1. 

 Port Jackson. 



Genus Siphonognathus, Richards. 



Head and body very elongate ; snout long as in Fistularia, 

 upper jaw terminating in a long, pointed skinny appendage ; 



