GXATIIONEMUS. 105 



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

 Caudal with obtusely pointed lobes. Caudal peduncle 3 times as long 

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

 transverse series on body, l-J in transverse series between dorsal tnd 

 anal, 12 round caudal peduncle. Silvery, brownish on the back; a 

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



Total length 83 millim. 



Eovuma River, East Africa. 

 1. Yg., type. RovumaR. Dr. C. Livingstone (P.). 



11. GNATHOXEMUS BEUYERII. 

 Pellegr. Bull. Mus. Paris, 1904, p. 441. 



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

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

 little less than f 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 2J times as long as deep. 55 scales in lateral line, 

 ^ in transverse series on body, j^ in transverse series between dorsal and 

 anal, 32 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. 



AJormyrus montelri, Giintli. Ann. & Mag. N. H. (4) xii. 1873, p. 144. 

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

 Congo, p. 98 (1901). 



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

 5 times. Head I3- to 1^ times as long as deep, upper profile descending 

 in a straight or slightly concave line ; snout ^ 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, 6 to 10 in lower; eye 

 moderate, 5 to f length of snout, | to f interorbital width. Dorsal 

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



