CIIAEACINIDJE. 101 



Uelle, Upper Congo. — Types in Congo Museum, Tervueren. 

 1. One of the types. Dungu. Capt. Hutereau ((.'.). 



Dorsal fin originating further back than in N. unitceniatus. 



15. NEOLEBIAS, Stdr. 



2 a. NEOLEBIAS ANSORGII. 

 Bouleng. Ann. Mus. Congo, Zool. ii. 3, p. 8, pi. xvii. fig. 2 (1912). 



Depth of body 2§ to 3 times in total length, length of head 3 to 

 3 j times. Head twice as long as broad, a little longer than deep, 

 smooth above, with large fontanelle ; snout rounded, much shorter than 

 eye, which is 3 times in length of head and equals interocular width ; 

 mouth terminal ; maxillary extending to below anterior border of eye ; 

 14 teeth in outer prsemaxillary series. Gill-rakers short, about 12 on 

 lower part of anterior arch. Dorsal III 8, originating immediately 

 behind vertical of ventral?, longest ray £ length of head. No adipose 

 dorsal. Anal II 6. Pectoral nearly § length of head, as long as ventral. 



Keoleblas ansorgii. 

 Type (A. M. C). 



Caudal forked, with pointed lobes. Caudal peduncle a little longer than 

 deep. 29-32 scales in longitudinal series, 9 in transverse series between 

 dorsal and ventral ; lateral line about or reduced to 3 or 4 scales behind 

 the gill-cover. Green above, with a broad darker band along the side 

 and a dark green bar, edged anteriorly with yellowish, at the base of 

 the caudal ; dorsal and caudal pale orange, other fins bright orange or 

 vermilion, sometimes blackish at the end. 



Total lenght 27 millim. 



Chiloango. 



1-4. Types. Marshes near Luculla R. Dr. W. J. Ansoro-e (C). 



5-6. Types. Luali R. at Lundo. 



Distinguished from the other species of the genus by the more 

 posterior position of the dorsal fin. 



