QNATHOJS"EMUS. 



123 



measuring J diameter of eye ; teeth conical, 6-8 in upper jaw, 4 in lower ; 

 eye rather large. Dorsal 32-33, originating above 6th or 7th ray of anal, 

 its length once and f in its distance from head. Anal 36-37, a little 

 nearer base of caudal than base of ventral. Pectoral pointed, as long as 



Fig. 102. 



GnatJionemus ibis. 

 Type (A. M. C). f. 



head without rostrum, nearly reaching end of ventral. Caudal partly 

 covered with scales, with pointed lobes. Caudal peduncle 3 times as 



18 



long as deep, shorter than pectoral. 77-82 scales in lateral line, 2^j 



in transverse series between dorsal and 

 Dark brown ; two blackish vertical 



in transverse series on body, jg^^ 



anal, 16 round caudal peduncle. 



bands, separated by a light interspace, between dorsal and anal ; fins 



blackish. 



Total length 150 millim. 



Ubanghi. — Type in Congo Museum, Tervueren. 

 1. One of the types. Banzyville. Capt. Rojaux (C). 



30. GNATHONEMUS CURVIROSTRIS. 



Bouleng. Ann. Mus. Conoo, Zool. i. p. 13, pi. vi. fig. 1 (1898), Proc. Zool. Soc. 

 1898, p. 811, and Poiss. Bass. Congo, p. 106 (1901). 



Depth of body 4f times in total length, length of head 3J times. 

 Upper profile of head descending in a strong curve ; snout much pro- 

 longed, tubiform, strongly compressed, curved downwards, its length 3J 

 times postocular part of head, and 12 times its least depth, which a little 

 exceeds diameter of eye ; latter slightly more than J interorbital width ; 

 lower jaw with a compressed dermal appendage IJ diameters of eye ; 

 teeth conical, 3 in upper jaw, 4 in lower. Dorsal 32, originating above 



