250 



CHAEACIXID^. 



1. NEOBORUS ORNATUS. 

 Bouleng. Ann. Mus. Congo, Zool. i. p. 78, pi. xxxiv. fig. 4 (1899), and Poiss. 

 Bass. Congo, p. 180 (1901). 



Depth of body 5-g- to 6J times in total length, length of head 3j to 3-| 

 times. Head 3^ to 4 times as long as broad, 2 to 2^ times as long as 

 deep, flat above ; snout as long as or a little longer than postocular part 

 of head ; eye 5 to 5^ times in length of head, equal to or a little greater 

 than interorbital width ; upper jaw not quite extending to below anterior 

 border of eye ; 29-34 small teeth on each side in upper jaw, 22-27 in 

 lower ; 2 canines at extremity of upper jaw and 3 at extremity of lower ; 

 naked part of cheek double the width of suborbitals. Gill-rakers very 

 small, almost rudimentary. Dorsal III 13-15, originating a little behind 

 vertical of base of ventral, longest ray hardly | length of head. Anal 

 IlI-IV 14-15. Pectoral shorter than ventral, not half length of head. 

 Caudal forked, with rounded lobes, nearly entirely covered with small 



Neoboriis onmtas. 

 Type (A. M. C). -i 



14-15 



scales. Caudal peduncle twice as hmg as deep. Scales 98-110 f^-p^, 8 or 

 9 between lateral line and root of ventral. Purplish grey above, silvery 

 or greenish on the sides ; three olive bands along the side, the median 

 widest, along the lateral line ; dorsal orange or grey ; caudal orange, 

 with 6 or 7 more or less regular longitudinal black stripes. 



Total length 180 millim. 



Upper Congo. — Type in Congo Museum, Tervueien. 



1. One of the types. Kutn, L. Leopold II. M. P. Delliez ((\). 



Bikoro, Upper Congo. „ 



2. Skel. 



3. Ad. 



4. llgr. 



Moiisenibe, ,, 

 Upper Congo. 



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

 Brussels University. 



