180 



caudal, slightly emarginated, has fifteen long rays and three 

 short ones on each side ; the ventrals are rather small, and the 

 pectorals rather long, and formed of thirteen rays. 



The upper parts are of an olive grey, with a broad longitudinal, 

 silvery band on the side ; lower parts white The inferior 

 mandible is black, with its extremity red ; the eye is of a golden 

 colour. Dorsal fin, obscure ; caudal of a light olive, having some- 

 times an obscure tinge on its posterior extremity ; anal and 

 ventrals of a light olive hue ; pectorals in part black ; and some- 

 times covered by this colour, but in other specimens it only ex- 

 tends over their posterior part. 



This sort was first observed by Messrs. Quoy and Graimard, at 

 Western Port, during Captain d'Urville's Expedition. It is one 

 of the commonest fishes in the Melbourne Market, during all 

 seasons of the year, and is considered good food. It is equally 

 common in Hobson's Bay as at "Western Port, and young speci- 

 mens are often found in the brackish waters of the lower Tarra. 

 It rarely exceeds 14 inches. 



A very young specimen, not more than an inch long, had its 

 back green and a brown spot on the top of the head ; the longi- 

 tudinal band of the sides was of a most brilliant silver colour ; 

 the lower jaw was entirely black. 



GONOKHYNCHnm 



" Head and body entirely covered with spiny 

 scales ; mouth with barbels. Margin of the upper 

 jaw formed by the intermaxillary, which, although 

 short, is continued downwards as a thick lip, situated 

 in front of the maxillary. Adipose fin none ; the 

 dorsal fin is opposite to the ventrals, and short like 

 the anal. Stomach simple, without blind sac; py- 

 loric appendages in small number. Pseudobranchia3 ; 

 air-bladder absent. Gill-openings narrow. 



"Southern temperate parts of the Atlantic and 

 Pacific; Japan." 



