GNATHONEMLTS. 



121 



dermal appendage as long as or a little shorter than diameter of eye ; 

 teeth conical, 3 in upper jaw, 4 in lower. Dorsal 31-35, originating 



rig. ioo. 





Gnailionemus elepJias, 

 Type (A. M. G). {. 



above 5th ray of anal, its length 1^ to If times its distance from head. 

 Anal 33-37, equally distant from base of ventral and from base of 

 caudal. Pectoral pointed, little shorter than head, extending to middle 

 or second third of ventral, and twice as long as latter. Caudal scaled, 

 with pointed lobes. Caudal peduncle 3 times as long as deep, as long 

 as head or a little shorter. 70-80 scales in lateral line, j^~^ in trans- 



• 13-18 



verse series on body, j^jg in transverse series between dorsal and anal, 

 12 round caudal peduncle. Brownish above; young with a black 

 lateral band edged with yellowish, expanding into a rhomboidal marking 

 between dorsal and anal. 



Total length 400 millim. 



Upper Congo. — Type in Congo Museum, Teivueren. 



1. One of the types. Upoto. Capt. Wilverth (C). 



2. Ad. Stanley Falls. Rev. W. H. Bentley (C). 



3. Skel. „ „ 



4. Hgr. Irebu. M. P. Delbez (C.). 

 5-6. Yg. Upper Congo. Brussels University. 



28. GNATHONEMUS RHYNCHOPHORUS. 

 Bouleng. Ann. Mus. Congo, Zool. i. p. 13, pi. v. fig. 2 (1898), Proc. Zool. Soc. 

 1898, p. 810, pi. li., and Poiss. Bass. Congo, p. 105 (1901). 



Depth of body equal to length of head, 3|- to 4 times in total length. 

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

 prolonged, tubiform, strongly compressed, curved downwards, its length 

 2 to 2^ times postocular part of head, and 3i to 7 times its least depth, 



