122 



MOEMTRID^. 



which nearly equals diameter of eye ; latter f interorbital width ; lower 

 jaw with a compressed dermal appendage about as long as eye ; teeth 

 conical, 5 in upper jaw, 4 in lower. Dorsal 27-31, originating above 

 6th or 7th ray of anal, its length 1 J to If times in its distance from 

 head. Anal 31-35, nearly equally distant from base of ventral and base 

 of caudal. Pectoral obtusely pointed, J length of head, ventral J or 



Fiff. 101. 



Gnathonemus rhyncliophoms. 

 Type(A. M. C). I 



rather less; pectoral extending beyond base of ventral. Caudal scaled, 

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

 |- to f length of hend. 75-85 scales in lateral line, .^J,..^^ in transverse 

 scries on body, "h^^ in transverse series between dorsal and anal, 16 or 

 18 round candid peduncle. Brownish, with a ratlier indistinct darker 

 vertical band between dorsal and anal. 



Total length 380 millim. 



Congo. — Types in Congo Museum, Tervueren. 



1-2. Ad. & ligr., two o£ Upoto, Upper Congo. 



the types. 

 3. Yg. 

 4-5. Yg. 



6. Hgr. 



7. Yg. 



Banzyville, Ubanglii. 

 Stanley Pool. 

 Bonia, Lower Congo. 

 Lower Con 20. 



Capt. Wilverth (C). 



Capt. Royanx (C). 

 M. De Meuse (C). 

 M. P. Delliez (C). 

 Rev. J. Pinnock (C^). 



29. GNATHONEMUS IBIS. 

 Bouleng. Ann. Mus. Congo, Zool. ii. p. 25, pi. vii. fig. 4 (1002). 



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

 times. Snout produced into a long, strongly compressed and curved 

 tube, the length of which equals 2J to 3 times that of postocular part of 

 bead and 8 to 10 times its least depth; a compressed mental appendage, 



