SILURANODON. 



299 



beyond base of ventral, its spine feeble, smootb, without any serration, 

 and about -f to -f the length of the fin. Ventral -$ to f length of head, 

 inserted below dorsal, or just behind vertical of its base. Caudal 

 notched, with rounded or obtusely pointed lobes, upper a little longer 

 than lower. Coloration silvery ; head and a dorsal band dull greyish 

 brown, finely speckled with blackish, this band extending on the upper 

 lobe of the caudal fin; a red spot, shot with gold, on the gill-cover; a 



Fig. 240. 



Siluranodon auritus. 

 Near Cairo (F. N.). f 



more or less distinct dark blotch behind the shoulder; sometimes a dark 

 streak above the lateral line ; dorsal fin often blackish ; caudal fin often 

 edged with blackish ; anal fin often speckled with blackish, especially 

 on the lower half. 



Total length 175 millim. 



Lower Nile to White Nile.— Type in Paris Museum. 



1. Ad. 



2-13. Ad. 



14. Skel. 

 15-16. Ad. 



17. Ad. 



18. Hgr. 



19. Hgr. 



20-27. Ad. & hgr. 

 28-33. Hgr. 

 34-43. Hgr. & yg. 

 44-46. Hgr. 



Damietta Nile, downstream side 



of barrage. 

 Rosetta Nile, downstream side 



of barrage. 



Near Cairo. 



Luxor. 



Near Luxor. 



Between Assitit and Abu Tig. 



Assuan. 



Gharb-el-Aish, White Nile. 



Fashoda, „ 



Mouth of L. No, „ 



L. Loat, Esq. (0.). 



Dr. J. 0. Mitchell (P.). 

 L. Loat, Esq. (0.). 



