DISTICHODUS. 



26- 



feebly compressed, as long as or a little longer than eye, which is 3 to 4 

 times in length of head ; interorbital width 2£ to 2| times in length of 

 head; maxillary extending to below nostrils ; teeth in two series in each 

 jaw, outer series containing 16-20 teeth. Dorsal 16-20 (4-5 un- 

 branched), equally distant from head and from caudal, or a little nearer 

 former, its base equalling its distance from adipose fin, which is small. 

 Anal 14-16 (3 unbranched), its base covered with scales and shorter 

 than that of dorsal. Pectoral £ to -f- length of head. Caudal deeply 



Fig. 200. 



fem^ 





,-:i 



Distichodas iwtossjrilus. 

 Type. 



forked, with pointed lobes. Caudal peduncle as long as deep. Scales 

 38-46 ~, 6-7 between lateral line and root of ventral. Silvery, back 

 brown ; a large black blotch or oblique band on dorsal (between 4th to 

 11th or 12th rays) ; a more or less distinct round blackish spot at base 

 of caudal. 



Total length 19-5 millim. 



South Cameroon to Congo. 



1-4, 5-6. Ad. & hgr. 



7. Skel. 



8. Hgr. 



9-11. Types. 

 12-14. Ad. & hgr. 

 15-16. Ad. 

 17- 18. Hgr. 

 10. Yjr. 



Kribi R., S. Cameroon. 



11 » 



Ja R. (Congo System) at 



Bitye, S. Cameroon. 

 Gaboon. 



Lambarene, Ogowe. 

 Komadekke ,, 

 Sette Cam a, Gaboon. 

 Monscmbe, Upper Congo. 



G. L. Bates, Esq. (C). 



Miss Kingsley (C). 

 Dr. W. J. Ansorge (C). 



Rev. J. H; Weeks (P.). 



