216 CHAEACINID^. 



under the dorsal and extending on the median rays of the caudal ; dorsal, 

 caudal, and ventral fins lemon-yellow. 



Fig. 162. 



Total length 150 millim 

 South Cameroon. 



1-4. Types. 

 5-7. Ad. & hgr. 



8. Skel. 



9. Ad. 

 10-12. Ad. 



Alestes oj[>isili()tciinia. 

 Type (P. Z. S. 1903). 



Kiibi River. 



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



Mvile River. 



Ja River at Bifye. 



20. ALESTES POPT^E. 

 Pellegr. Bull. Mus. Paris, 1906, p. 367. 



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

 Head a little longer than deep, its length to occiput equal to its width ; 

 snout a little longer than eye, Z\ times in length of head; adipose 

 eyelid rudimentary ; interorbital width f length of head ; maxillary not 

 extending to below anterior border of eye; 16 teeth (-|) in upper jaw; 

 length of lower border of second suborbital equal to diameter of eye. 

 Gill-rakers rather short, 15 on lower part of anterior arch. Dorsal II 8 

 originating above last rays of ventral, nearer occiput than caudal. 

 Adipose fin absent in the unique specimen. Anal III 10. Pectoral 

 not reaching ventral. Caudal peduncle about as long as deep. Scales 

 22 .jf, 11 between lateral line and root of ventral. Brownish above 

 golden yellow on the sides and beneath, each scale edged with purplish ; 

 fin greyish. 



Total length 190 millim. 



Congo. — Type in Paris Museum. 



