GXATIIONKMUS. . 105 



of head, twice length of ventral, reaching a little beyond base of latter. 

 Caudal with obtusely pointed lobes. Caudal ])cduncle 3 times as long 

 as deep, a little shorter than head. 62-65 scales in lateral line, i^ in 

 transvert^e seric^s on body, |^ in transverse series between dorsal and 

 anal, 1'2 round caudal peduncle. Silvery, brownish on the back; a 

 dark brown vertical bar on the body below origin of dorsal. 



Total length 83 millim. 



Kovuma River, East Africa. 

 1. Yg., type. Kovuma li. Dr. C. Livingstone (P.). 



11. GNATHONEMUS BRUYERII. 

 Pellegr. Bull. Mns. Paris, IDOl, p. 411. 



Depth of body 3^ times in total length, length of head 5 times. 

 Head scarcely hmger than deep, with curved upper profile ; snout a 

 little less than ^ length of head; teeth notched, 5 in both jaws; chin 

 with a globular swelling ; eye f length of snout, J interorbital width. 

 Dorsal 26, originating slightly further back than anal. Anal 33. 

 Pectoral pointed, as long as head, twice as long as ventral, extending 

 beyond base of latter. Caudal scaled at the base, with pointed lobes. 

 Caudal peduncle 2^ times as long as deep. 55 scales in lateral line, 

 ^ in transverse series on body, fl i^^ transverse scries between dorsal and 

 anal, 12 round caudal peduncle. Silvery, darker on the back; traces 

 of a dark vertical band between origin of dorsal and anal. 



Total length 110 millim. 



Ivory Coast. — Type in Paris Museum. 



12. GNATHONEMUS MONTEIRI. 



A/onu>/n(s vio)>teir{, Giinih. Ann. & Mag. N. H. (4) xii. 187,'], p. 144. 

 Gnathonemns monteiri, Bouleng. Proc. Zool. Soc. 1898, p. 807, and Poiss. Bass. 

 Congo, p. 98 (1001). 



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

 5 times. Head 1^ to 1 J times as long as deep, upper profile descending 

 in a straight or slightly concave line ; snout J to f length of head ; lower 

 jaw with a roundish or oval, depressed dermal appendage about as long 

 as eye; teeth notched, 5 to 10 in upper jaw, to 10 in lower; eye 

 moderate, J to f length of snout, i to J interorbital width. Dorsal 

 2S-33. originating above 10th to 15th ray of anal, its length about twice 



