CHEYSICHTHTS. 



337 



head, very strongly serrated on inner border. Caudal deeply forked, 

 with pointed lobes, outer rays about twice as long as middle rays. 



Fig. 263. 



Type. i. 



Caudal peduncle If times as long as deep. Olive-brown above, white 

 beneath. 



Total length 250 millim. 



Lake Bangvvelu. 



1. Type. L. Bangwohi. F. H. Melland, Esq., and 



Father Foulon ((\). 



17. CHRYSICHTHYS ORNATUS. 

 Bouleng. Ann. Mus. Congo, ii. p. 39, pi. xi. fig. 2 (1902). 



Depth of body 4J to 5 times in total length, length of head 3 to 3^ 

 times. Head much depressed, 1^ to I3- times as long as broad, finely 

 granular on the vertex and occiput, striated on the snout ; occipital 

 process broad, in contact with interneural shield ; snout broadly rounded, 

 nearly twice as broad as long, not extending beyond lower jaw, its 

 length f or a little more than ^ that of head ; eye 4 to 5| times in length 

 of head. If to 2^ times in interorbital width ; width of mouth If to If 

 times in length of head ; pnrmaxillary band of teeth curved, 6 to 8 

 times as long as broad ; vomcio-pterygoid teeth forming a broad band 



