124 



MOEMTEIDiE. 



10th ray of anal, its length once and ^ in its distance from head. Anal 36, 

 equally distant from base of ventral and from base of caudal. Pectoral 

 pointed, | length of head, twice as long as ventral, extending beyond 

 base of latter. Caudal scaled, with pointed lobes. Caudal peduncle 



GnatJwnemus curvirostris. 

 Type (A. M. C). £. 



4 times as long as deep, more than ^ length of head. 90 scales in lateral 



18 . • IS 



line, 22 in transverse series on body, ^ in transverse series between 

 dorsal and anal, 16 round caudal peduncle. Pale brownish above, 

 whitish below. 



Total length 370 millim. 



Lower Congo (Matadi). — Type in Congo Museum, Texvueren. 



U. GNATHONEMUS NUMENIUS. 

 Bouleng. Ann. Mus. Congo, Zool. i. p. 11, pi. vi. fig. 2 (1898), Proc. Zool. Soc. 

 1898, p. 811, and Poiss. Bass. Congo, p. 107 (1901). 



Depth of body 4f to 5 times in total length, length of head 2f to 2^ 

 times. Upper profile of head convex ; snout produced into an extremely 

 long, compressed tube, feebly curved downwards, its length, in the adult, 

 5 to 5^ times postocular part of head, and 20 times its least depth, 

 which equals diameter of eye ; latter ■§- interorbital width ; lower jaw 

 with a compressed dermal appendage nearly as long as eye ; teeth 

 conical, 7 in upper jaw, 4 or 6 in lower. Dorsal 27-34, originating 

 above 8th or 9th ray of anal, its length 1| to If- times in its distance 

 from head. Anal 29-37, equally distant from base of ventral and from 

 base of caudal. Pectoral pointed, less than \ length of head, almost twice 

 as long as ventral, and extending almost to extremity of latter. Caudal 



