159 



rays ; the pectorals are arched ; they are rather shorter than 

 the head, and formed of fifteen rays, of which the first is 

 short, and the third the longest of all, and extends further than 

 the spines of the anal. The dorsal and anal are received in a 

 low, scaly sheath ; the longest spines of the dorsal are equal to 

 the diameter of the eye ; this same dimension is contained one 

 and a-quarter times in the caudal at its centre, and twice on its 

 sides. 



General colour silvery ; the upper parts are blue, and the 

 sides have a copper tinge ; there are faint longitudinal lines, due 

 to the centre of the scales being rather obscure. The spinous 

 dorsal is purple, and the soft part rather yellow ; the caudal is of 

 the latter colour ; anal, pectorals, and ventrals, pink eye 

 yellow, the pupil rather angular. 



Seen several specimens in the month of July. 



Order III.— ANACANTHINI. 



" Vertical and ventral fins (except in gadopsis) 

 without spinous rays. The ventral fins, if present, 

 are jugular or thoracic. Air-bladder, if present, 

 without pneumatic duct. 



GADOPSID^]. 

 " A small portion of the dorsal aucl anal fins is 

 formed into true spines. Gadopsis Marmoratus. 

 " Fresh waters of Australia and Tasmania. 



GADOPSIS. 



This very singular fish has been separated from all others by 

 Dr. Grunther as a distinct family. 



The only sort yet described is the following : — 



