242 DESCRIPTIVE CATALOGUE OF AUSTRALIAN FISHES, 



less than the length of the pectoral fin, which is more than the 

 distance of the opercular margin from the orbit. Ventral fin 

 midway between the eye and the caudal fin. The middle and 

 hinder rays of the dorsal and anal fins are subequal in length, 

 short, the last terminating at a considerable distance from the 

 root of the caudal. Caudal fin rounded. Scales rather small, 

 adherent. A small round, deep black spot at the root of tb e 

 caudal fin. 

 Port Darwin. 



863. Beloxe Kreffth, Gunth. 



Gunth., Cat. Fishes VI., p. 250. 



D. 17. A. 19. P. 13. 



The free portion of the tail is strongly compressed, much 



deeper than broad. The length of the head is contained twice 



and two-fifths in the total (without caudal) ; a scaly groove of 



moderate width runs along the middle of its upper surface ; 



superciliary region slightly striated ; base of the intermaxillaries 



much depressed ; maxillaries two-thirds hidden by the prceorbital. 



Teeth rather feeble, widely set ; tongue smooth. The diameter 



of the eye equals the width of the interorbital space, and is one- 



third of the length of the postorbital portion of the head. Body 



strongly compressed, its depth being not much less than the 



length of the pectoral fin, which is somewhat less than the 



distance of the opercular margin from the orbit. Ventral fin 



midway between the prrcoperculum and caudal fin. Origin of 



dorsal fin opposite to that of anal. The middle and hinder dorsal 



and anal rays, subequal in length, short, the last terminating at 



some distance from the root of the caudal. Caudal fin slightly 



emarginate. Scales thin and small. Upper parts blackish., sides 



and belly silvery white, the two colours separated by a narrow 



greenish streak. 



Rivers of Northern Queensland. Length two feet. 



