230 



chaeaci^'IDj:. 



7. MTCRALESTES ALIUS. 

 Bouleng. Ann. Mus. Congo, Zool. i. p. 88, pi. xxxvi. fig. 5 (1899), and Poiss. Bass. 

 Congo, p. 163 (1901). 

 Depth of body 2^ to 2| times in total length, length of head 3 J to 

 3f times. Head twice as long as broad, longer than deep ; snout much 

 shorter than eye, which is 2 to 2^ times in length of head ; interorbital 

 width about 3 times in length of head ; maxillary hardly reaching to 

 below anterior border of eye; 12-14 teeth (g:^) in upper jaw, 10 (g) in 

 lower. Gill-rakers rather long, about 12 on lower part of anterior arch, 

 Dorsa] II 8, originating immediately behind vertical of base of ventrals, 

 at equal distance from end of snout and from caudal, longest ray as long 



Fig. 174. 



Micralestes alius. 

 Type (A. M. C). 



as head. Anal III 23-25. Pectoral a little shorter than head, extending 

 a little beyond origin of ventral. Caudal forked, lobes pointed. Caudal 

 peduncle as long as deep. Scales 23-26 gf, 2 between lateral line and 

 root of ventral. Silvery, back olive, scales dark-edged ; a large rounded 

 black spot on the caudal peduncle and the median caudal rays ; adipose 

 fin blackish. 



Total length 65 millim. 



Upper Congo (Lake Tumba, Lindi R., and Ubanghi). — Types in 

 (/ongo Museum, Tervueren. 



1-2. Types. Bikoro, L. Tumba. M. P. Delhez (C). 



:-5-4. Ad. Lindi R. M. M. Storms (C.) ; 



Brussels Museum (P.). 

 5. Ad. Banzyville, Ubanghi. Capt. Royaux (C). 



