GNATHONEMUS. 



Ill 



5 in upper jaw, 6 in lower ; eye moderate, J to -f length of snout, f to 

 J interorbital width. Dorsal 25-30, originating above 6th to 9th ray of 

 anal, its length 2 to 2^ times in its distance from head. Anal 30-37, 

 equally distant from base of ventral and from base of caudal, or a 

 little nearer latter. Pectoral pointed, as long as head or a little 

 shorter, twice as long as ventral, reaching base of latter or beyond. 

 Caudal scaled in its basal J or f , with pointed lobes. Caudal peduncle 



FiK. 90. 



Gnathonemus cyprinohles. 

 Fayum (F. N.). \. 



2\ to 3 times as long as deep, as long as head or a little shorter. 70-S6 



15-20 



12-18 



scales in lateral line, 19 ^ in transverse series on body, j^-is i Q trans- 

 verse series between dorsal and anal, 16 (rarely 18) round caudal peduncle. 

 Silvery, back darker, bluish or greenish ; some young specimens with 

 small blackish spots scattered on the body. 



Total length 300 millim. 



Nile, from the Delta to the Bahr-el-Gebel, Chad Basin, Niger, Upper 



Congo. 







1. Ad. (Type of 



Egypt. 



Dr. Ruppell (C). 



M. elongatus.) 







2-3. Ad. & hgr. 



» 



»! 



4-5. Ad. 



Lower Nile. 



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



6-7. Ad. 



?s 



J. Petherick, Esq. (C). 



8. Hgr. 



Kafr-el-Zayat, Eosetta Nile. 



L. Loat, Esq. (C). 



9-10. Ad. 



Barrage N. of Cairo. 



» 



11-14. Ad. 



Cairo. 



)> 



15. Ad. 



Wasta, Lower Nile. 



?» 



16. Skel. 



55 )) 



>i 



17. Ad. 



Beni Souef, Lower Nile. 



» 



18. Ad. 



Between Beni Souef and Biba. 



5) 



