BY CHAKLES W. DE VIS, M.A. 393 



Lower profile more convex than the upper. The upper edge of 

 the orbit rises above the interorbital surface. Operculum with 

 two spines subequal or the lower one elongated. Preoperculum 

 finely serrated on both limbs. Caudal forked ; oth and 6th 

 dorsal spines the longest, one half the height of the body. 2nd 

 aual spine equal in length but stronger than the 3rd. 



Colour uniform silvery, on the dorsum with a bluish steel tint. 

 Caudal broadly dark edged all round. 



Length, 5 inches. Locality, Cardwell. 



The naked head, associated with comparatively large scales, and 

 a preoperculum entirely without spines have led to the proposal to 

 fonn a genus for this Priacanthine fish. 



PSEUDAMBASSIS NIGRIPINNIS. 



D. 7, 1/8. A. 3/9. Lat. 29. Tr. 11. 



The height of the body is 2/5, the length of the head ^ of the 

 length, s.c. The orbit 2|, the snout and interorbital each 3j in 

 the length of the head. The 2nd dorsal spine is half the height 

 of the body. Preorbital serrations feeble. Lower limb of pre- 

 operculum very feebly serrated, but with two or three strong 

 teeth at the angle. Profile equally convex above and below, 

 slightly concave over the orbit. Head and foreparts thick. 



Colour fleshbrown, with a silvery mesial line. The scales of 

 the back edged with black spots ; soft dorsal and anal, more or 

 less, largely black tipped ; web between 2 and 3 dorsal spines 

 densely black dotted. 



Length, 1-lf inches. Locality, Brisbane. 



Besides the black edged scales and black tipped fins this little 

 fish has a larger head and broader interorbit that P. Bamsayi, 

 with which it is associated in fewer numbers in the Brisbane 

 Liver. 



PSEUDAMBASSIS PALLIDUS. 



D. 7, 1/8. A. 3/8. Lat. 25. Tr. 9. 

 The height of the body is 2\ ; the length of the head 2f in the 

 length, s.c. ; orbit £, snout and interorbit each \ of the length of 

 the head. Second dorsal spine more than | of the height of the 



