GNATHONEMUS. 



119 



times. Upper profile of head descending in a strong curve ; snout 

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

 length If to 2 times postocular part of head, and 4 to 5 times its least 

 depth, which nearly equals diameter of eye ; latter |- to f interorbital 

 width; lower jaw with a compressed dermal appendage about as long 

 as the eye ; teeth conical, 3 in upper jaw, 4 in lower. Dorsal 26-30, 



Fig. 98. 



GnatJionemvs tamawhia. 

 Type, after Guuther (P. Z. S. 1SG4). g. 



originating above 6th to 8th ray of anal, its length 1^ to If times in its 

 distance from head. Anal 29-34, nearer base of caudal than base of 

 ventral. Pectoral obtusely pointed, -?- to \ length of head, ventral \ to ■§•: 

 pectoral extending beyond base of ventral. Caudal densely scaled, with 

 pointed lobes. Caudal peduncle 3-2- times as long as deep, f to f length 

 of head. 70-80 scales in lateral line, ig "^rj in transverse series on 

 body, 32-1^ i n transverse series between dorsal and anal, 12 round caudal 

 peduncle. Brownish above ; a rather indistinct dark, light edged vertical 

 band between origin of dorsal and anal. 



Total length 360 millim. 



Niger, Old Calabar, Congo, Shari. 



1. Type. Niger. 



2. Ad. Assay, Lower Niger. 

 ;5. Ad. Bolobo, Upper Congo. 

 4. Ad. Monsembe, „ 

 5-6. Ad. Upoto, „ 

 7-8. Ad. & hgr. Upper Congo. 



Mr. J. T. Dalton (C). 

 J. S. Budgett, Esq. (P. 

 Rev. G. Grenfell (P.). 

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

 Capt. Wilvevth (C). 

 Brussels University. 



26. GNATHONEMUS MIRUS. 

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

 1898, p. 810, and Poiss. Bass. Congo, p. 103 (1901). 



Depth of body 3^- times in total length, length of head 4 times. 



