DISTICHODTJS. 



261 



2. DISTICHODUS ALTDS. 



Bouleng. Ann. Mus. Congo, Zool. i. p. 80, pi. xxxv. fig. 1 (1899), and Poiss. Bass. 

 Congo, p. 188 (1901) ; Pellegr. Bull. Mus. Pi.ris, 1904, p. 311. 



Depth of body 2 to 2\ times in total length, length of head 4 to 41 

 times. Head a little deeper than long, twice as long as broad ; snout 

 broad, truncate, as long as or a little longer than eye, 3 times in length 

 of head ; interorbital width half length of head, 1 J to nearly 2 times 

 diameter of eye ; maxillary extending to below nostrils ; teeth in two 

 series in each jaw, outer series containing 18-22 teeth. Dorsal 17-18 



Fig. 198. 





^^ _=_^ -1 "-^"^ 



Duticliodus alius. 

 Type (A. M. C), \ 



(4 unbranched), equally distant from eye and from caudal, its base 

 equalling its distance from the small adipose fin. Anal 21-22 

 (3 unbranched), nearly entirely covered with scales, its base as long as 

 that of dorsal. Pectoral f to f length of head. Caudal forked, with 

 rounded lobes. Caudal pedmicle a little deeper than long. Scales 

 40-42 j^, 9 between lateral line and root of ventral. Bronzy brown, 

 each scale with a golden spot ; lower surface of head and pectoral 

 region whitish ; fins blackish grey, caudal edged with pink. 

 Total length 180 millim. 



