ALESTES. 



218 



lower border of second suborbital as long as eye. Gill-rakers moderately 

 long, 16-18 on lower part of anterior arch. Dorsal II 8, originating 

 above middle of base of ventral, at equal distance from end of snout and 

 from caudal, or a little nearer latter; longest ray shorter than head. 

 Anal III 12-13. Pectoral f to | length of head, not reaching ventral. 

 Caudal forked, with pointed lobes. Caudal peduncle 1^ to 1} times as 

 long as deep. Scales with radiating and arborescent or anastomosing 

 canals, 24-25 gf, 2 between lateral line and root of ventral. Silvery, back 

 brownish ; a more or less distinct dark spot behind the head, above the 

 lateral line, and a black band on the side of the caudal part of the 

 body, extending on the middle caudal rays. 



Total length 100 millim. 



Ogowe River, Congo. 



1-4. Types. Ogowe. Miss Kingsley (C). 



5- Hgr. Onibrokim, Ogowe. Dr. W. J. Ansorge (C). 



^-7. Yg. Kondiie, Lower Congo. M. Lnja ((.!.). 



17. ALESTES BIMACULATUS. 



Bouleiig. Ann. Mus. Cougo, Zool. i. p. 85, pi. xxxvi. fig. 3 (1«99), and Poiss. Bass. 

 Congo, p. 157 (1901). 



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

 3f limes. Head twice as long as broad, a little longer thnn deep; 



Fig. 160. 



Alestes himaculaius, 

 Type(A. M. C). f 



snout as long as or a little shorter than eye, which is lateral and 3 to 

 3^ times in length of head ; no adipose eyelid ; interorbital region feebly 

 convex, 2 to 2\ times in length of head ; maxillary not reaching anterior 



