10-46 Catalogue of Malayan Fishes. TOct. 



latter fin so closely as to produce a general blackish colour. Iris nar- 

 row golden round the pupil ; the rest bluish black. 



D 10—1/25, C 17J-, A 2/7, V 1/5, P 18, Br. VII. 



Habit. — Sea of Pinang. 



Total length : 6|- inch. 



The length of the head is about ^ of the total ; its greatest vertical 

 diameter exceeds one half the length by \. The oblique diameter of 

 the eve is 5£ of the length of the head. The vertical diameter in front 

 of the dorsal is about \ of the total length. 



The dentition, as represented by Russell, resembles that of O. macu- 

 latus. The broad triangular part of the upper jaw at the angle of the 

 mouth, is finely radiated, but without the large triangular impression, 

 which appears in some of the other species. The second anal spine is 

 proportionally stronger than in the other species ; its length slightly 

 exceeds |- of the anterior ray, and the two lateral surfaces are com- 

 pressed, finely radiated, whereas in the preceding species this spine is 

 rounded. The air-vessel is lanceolate with numerous lateral branching 

 appendages ; its length equals that of the head, or about ^ of the total 

 length. The only individual observed, occurred at Pinang in 1844. 

 It resembles more O. versicolor than any of the preceding species : 

 Russell indeed gives 21 dorsal rays, but their number varies consider- 

 ably in all. In the present, as well as in the young of the preceding, 

 the caudal fin is proportionally much longer and more pointed than in 

 the adult, and the eye is also proportionally larger. 



Gen. Johnius, Block- Schneider, 1801. 



Velvety teeth in both jaws : in the upper an external series of arched 

 teeth, considerably longer and more distant than the rest ; in the lower 

 an internal series of conical teeth somewhat longer than the rest. 

 Differs from Scicena by the comparative greater thickness and length 

 of the second anal spine, which is nearly two thirds of that of the first 

 ray. 



Johnius dussumieri, (Cuv. and Val.) 



Corvina dussumieri, Cuv. and Val. V. 119. 



Head above and back dark greenish brown, paler, silvery on the 

 cheeks, preopercle and sides ; opercle steel-blue ; the scales minutely 

 dotted with brown ; abdomen pearl-coloured ; membrane of dorsal 

 transparent, minutely dotted with brown, edged with black ; caudal 



