IITDROCYON. 



ISl 



lateral line and scaly process at base of ventral. Back grey, brown, or 

 olive-green, sides and belly silvery white ; more or less distinct longitu- 

 dinal rows of blackish spots, often confluent into streaks, run along the 

 series of scales above the lateral line, and, exceptionally, also along 

 the series bordering the lateral line below ; these spots or streaks 

 entirely absent in very young specimens ; dorsal fin and upper lobe of 



Pig. 139. 







Hydrocyon forskalii. 

 Upper Nile (F. N.). 



caudal yellowish or grey, often blackish towards the end ; adipose fin 

 grey or whitish, rarely with a black spot ; ventral and anal, sometimes 

 also pectorals, tinged with pink or pale orange ; lower lobe of caudal 

 bright red. 



Total length 450 millim. — Grows to nearly 1 metre. 



Lower Nile to Blue Nile and Lake Albert ; Lakes Rudolf and 

 Gandjule (Margherita) ; Senegal, Niger. — Type in Paris Museum. 



Dr. Ruppell (C). 

 J. Petherick, Esq. (C). 

 S. S. Allen, Esq. (P.). 

 L. Loat, Esq. (C). 



