CHETSICHTHTS. 



Oo £ 



O00 



I 6, 1 j times as distant from root of caudal as from end of snout ; spine 

 feebly serrated behind, -f to § length of head ; first soft ray longest, only 

 a little longer than the spine. Adipose dorsal not much longer than 

 deep, its base § to -f that of the rayed dorsal, from which it is separated 

 by a space equal to 2 to 2^ times its base. Anal 11, 7 rays branched. 

 Pectoral spine nearly as long as dorsal, strongly serrated on inner side. 

 Caudal rather deeply notched, with rounded lobes, longest rays twice 

 length of median. Caudal peduncle 1^ to If times as long as deep. 

 Olive-brown above, white beneath ; a few black dots on the sides. 



Total length 155 millim. 



Upper Congo. — Type in Congo Museum, Tervueren. 



1-2. Yg., types. 



Stanley Pool. 



M. P. Delhez (€.)-. 



15. CHRYSICHTHYS DELHEZI. 

 Bouleng. Ami. Mas. Congo, Zool. i. p. 108, pi. xlii. fig. 2 (1899), and Poiss. Bass. 

 Congo, p. 288 (1901). 



rig. 262. 



Chrysiehthys delhezi. 

 Type (A. M. C). f. 



Depth of body 5 to 5| times in total length, length of head 3 times. 

 Head much depressed, 1\ times as long as broad, covered with thick 

 skin above ; occipital process narrow, extending to the small interneural 

 shield; snout broadly rounded, projecting very slightly beyond lower 

 jaw, If (young) to 2 times as Jong as eye, which is 5 (young) to 6 times 



