BY W. MACLEAY, F.L.S. 313 



of the orbit, the pectoral fin being entirely behind the vertical 

 from the eye. Dorsal spine compressed in the direction of the 

 longitudinal axis of the body, armed laterally with a row of 

 barbs, and in front with a double series of small very closely set 

 barbs ; it is smooth behind, rather feeble, and situated above the 

 hinder part of the orbit. Caudal fin truncate ; dorsal and anal 

 fins low. Ventral spine very small, rough, free from the 

 abdominal flap. Coloration uniform brownish grey ; the base 

 of the caudal spines of the hind margin of the caudal fin light- 

 coloured. 



South Australia. Length eighteen inches. 



996. Moxacantiius traciiylepis, Gunth. 



Gunth., Cat. Fishes VIIL, p. 248. 



D. 39. A. 35. 



Scales not distinct, replaced by short vertical prominences, each 

 of which bears from three to five spinelets. Tail with two pairs 

 of strong compressed spines bent forwards. Body oblong, its 

 depth being contained twice and two-thirds in the length without 

 the caudal fin. Snout produced, with the upper profile straight. 

 Gill-opening below the hinder half of the orbit; pectoral fin 

 behind the vertical from the hind margin of the orbit. Dorsal 

 spine strong, very long, nearly as long as the head, situated 

 above the posterior half of the orbit ; it is armed behind with a 

 double series of very small barbs, and there is also a double 

 series of minute barbs in the median line of the anterior surface 

 of the spine. Caudal fin rounded, short ; dorsal and anal fins 

 low. Ventral spines very small, fixed, with very short spikes 

 radiating from its centre. Colour blackish-brown ; the dorsal 

 and anal fins yellow, the tail orange ; blue spots along the base 

 of the dorsal, anal, and caudal fins. 



Broken Bay. Length fourteen inches. 

 U 



