Tlic Freslncater Fishes of South- Africa. 



337 



deep. Scales slightly rugose ; scales 54, lat. tr. ^ ; 4J rows of scales 

 between lateral line and base of ventral ; no distinct scaly process 

 on ventral in specimen. 



Colour (of preserved specimen), dull dark brown from end of snout 

 to tail, membranes of dorsal fin yellow with black spots ; black 

 spots on anal and caudal and about the middle of the body; caudal 

 peduncle yellowish with dark spots, these become few and faint 



gftias^y- ''''^AVvVvvyvVy/) v-'//vy 



FIG. 11. Sarcodaces odoe. 



ventrally till the ventral surface is white ; 3 marked dark brown 

 streaks radiating from eye back over preoperculum ; adipose fin 

 black with whitish base. 



2 specimens, 284 and 360 mm. in length, respectively, from 

 Kafue Eiver, Upper Zambezi (J. Drury). 



It is also reported from the rivers of West Africa, Shari, Congo, 



and Lake Ngami. 



2. HYDEOCYON. 



Hydrocinus, part., Guv. Kegne Anim., ii., p. 167 (1817). 



Hydrocyon, Cuv., Mem. Mus. Pai'is, v., 1819, p. 353. 



Snout rather elongate ; mouth large, with strong, pointed, more 

 or less compressed, sharp-edged teeth, wide apart and forming a 

 single series ; maxillary toothless, moderately large and slipping 

 under the preorbital ; cheek covered by the large sub-orbitals ; 

 nostrils near the eye close together, separated by a valvular flap ; 

 gill-membranes free from the isthmus. Part of the eye in front and 

 behind covered by an adipose lid. Tubules of lateral line straight 

 and short, most of them with a short spur downwards or a few 

 scales here and there having the spur directed upwards. A small 

 adipose dorsal fin. 



25 



