52 Annals of the South African Museum. 



FAMILY 



GEN. MUE^ENESOX, MoCall. 



MUR^INESOX CINEKEUS, Forsk. 

 (Silver Eel.) 



Vomerine teeth compressed, with a basal lobe in front and behind, 

 teeth of middle row fang-like and powerful ; teeth of inner series of 

 mandible similar in form to but much smaller than those of the 

 vomer and but rarely with basal lobes, those of the outer series rudi- 

 mentary and not bent outwards ; fang-like canines at symphysis. 

 Length of head contained nearly 2|- times in distance between point 

 of snout and vent ; snout slender, produced into a point beyond 

 lower jaw ; cleft of mouth wide, 2-^- times in length of head ; eyes 

 situated nearly in middle of length of head, 1J times interorbital 

 width and 2f times in length of snout. 



Dorsal commences in advance of gill-openings. Pectorals well 

 developed, length of head. Tail about 1| times length of trunk. 



Colour (of preserved specimen), uniform dark brown on back, 

 lighter below. 



One specimen, 735 mm. in length, from Mr. Eomer Eobinson, 

 Natal. 



GEN. MUEJENA, Arted. 



NEBULOSA, AM. 



Teeth obtuse, molar-like. Length of head 5f times in distance 

 from point of snout to vent ; tail slightly longer than the trunk. 

 Eyes about 2 diameters from point of snout and situated midway 

 between it and cleft of mouth, which is 2f times in length of head ; 

 gill-opening about equals diameter of eye. 



Dorsal fin fairly well developed and commencing a little in front 

 of gill-opening. 



Colour (of preserved specimen), whitish ground, covered with 

 numerous dark specks ; a row of about 30 large irregular black spots 

 on back, some of them with white spots in them, running through 

 dorsal fin and a similar row of black blotches below them extending 

 through abdomen. 



One specimen, 260 mm. in length, caught at the Bluff, Durban ; 

 from Mr. Eorner Eobinson, Natal. 



