1 898.] OF THE FAMILY MOEMTRID^. 803 



Onaihonemus longiharhis, Bouleng. Ann. Mus. Congo, Zool. i. 

 1898, p. 10. 



Chin with a very long pointed dermal appendage, its length 

 nearly equal to that of the snout. Dorsal 22 ; anal 28 ; pectoral 

 I length of head. Lat. 1. 58 ; 1. tr. ^^j. 



Victoria Nyanza. — Type in Berlin Museum ; insufficiently 

 described. 



3, Gnathonemus moorii. 



? Mormyrus, sp. n., Heuglin, Sitzb. Ak. "Wien, ix. 1852, p. 920, 

 pi. Ix. fig. 1. 



? Petrocephalus pictus, Marcusen, Mem. Ac. St. Petersb. (7) vii. 

 1864, p. 153. 



Mormyrus moorii, Giinth. Ann. & Mag. N. H. (3) xx. 1867, 

 p. 116. 



Mormyrus leptunis, Giinth. Proc. Zool. Soc. 1871, p. 670, pi. Ixix. 

 fig. B, and Ann. & Mag. Nat. Hist. (6) xvii. 1896, p. 280. 



Mormyrus grandisquamis, Peters, Mon. Berl. Ac. 1876, p. 250, 

 pi. — . fig. 3; Schilth. Tijdschr. Nederl. Dierk. Ver. (2) iii. 1891, 

 p. 84. 



Onatlionemus moorii, Bouleng. Ann. Mus. Congo, Zool. i. 1898 

 p. 10. 



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

 to 4|. Head as long as deep or slightly longer than deep, with 

 curved upper profile ; snout short, about | length of head ; 

 mouth on a level with the lower border of the eye ; a dermal 

 swelling on the chin 5 teeth small, notched, 5 in the upper jaw, 

 6 in the lower ; eye moderate, | to | length of snout, about k 

 interorbital width. Dorsal 20-25, originating above 4th to 6th 

 ray of anal, its length 2 to 2g times in its distance from the head. 

 Anal 25-29, equally distant from base of ventral and base of caudal, 

 or nearer the latter. Pectoral as long as head, twice as long as 

 veutral, extending beyond base of latter. Caudal densely scaled in 

 its anterior third, with pointed lobes. Caudal peduncle 2k to 3 

 times as long as deep, a little shorter than head. 43-49 scales in 

 the lateral line, ^^ in a transverse line on the body, ^ in a trans- 

 verse line between dorsal and anal, 8 round caudal peduncle. 

 Brownish, with a dark brown vertical band from the anterior rays 

 of the dorsal to the anterior rays of the anal. 



Total length 150 millim. 



Gaboon, Ogowe, Congo ; Upper Nile (?). 



4. GnATHONEMUS lilVINGSTONII, sp. n. 



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

 Head nearly as long as deep, with curved upper profile ; snout ^ 

 length of head ; mouth small ; chin with a globular dermal ap- 

 pendage ; teeth small, bicuspid, 5 in the upper jaw, 6 in the 

 lower ; eye small, g length of snout, f interorbital width. Dorsal 

 22, originating above 10th ray of anal, its length 2^ in its distance 



