MORMYBOPS. 



List of specimens examined : — 



2 Nile.— Biippell, 1833. 



1 Lower Nile.— Petherick, 1861. 



1 Nile near Cairo.— Capt. Flower, 19.8.04. 

 7 Beni Souef.— Loat, 27.8.99-9.9.99. 



4 Sanhur, nr. Beni Souef.— Loat, 5.9.99. 



3 Luxor.— Loat, 27.10.00-3.11.00. 



2 Assuan.— Loat, 22.8.00, 28.9.00. 



Measurements (in millimetres) and numbers of Jin-rays and scales. 



1. 2. 



3. 



7. 



155 



33 



38 



16 



9 



3, 



Total length (without caudal fin) 



Greatest depth of body , 



Length of head 



Width of head 



Length of snout 



Diameter of eye 



Interocular width 



Width of mouth 



Length of caudal peduncle 



Depth of caudal peduncle 



Length of pectoral fin 



Number of rays in dorsal fin 



„ ,, anal fin 



,, scales in lateral line 



,, „ from the middle of the back to the lateral line 



,, „ „ lateral line to the middle of the belly 



,, „ between dorsal fin and lateral line 



„ „ „ lateral line and anal fin 



,, „ round caudal peduncle 



245 



49 

 60 



23 

 13 

 4 

 12 

 11 

 29 

 13 

 33 

 27 

 42 

 96 

 20 

 23 

 16 

 13 

 20 



215 

 43 

 55 

 21 

 12 

 4, 

 11 

 10 

 24 

 11 

 30 

 28 

 42 

 91 

 18 

 24 

 14 

 13 

 20 



210 

 42 

 54 

 21 

 11 

 4 

 11 

 10 

 22 

 10 

 31 

 27 

 42 

 90 

 18 

 23 

 14 

 13 

 20 



200 

 35 

 52 

 18 

 12 

 4 

 9 

 9 

 24 

 11 

 25 

 26 

 40 

 95 

 17 

 24 

 14 

 12 

 20 



175 



32 



46 



17 



11 



4 



9 



8 



19 



9 



25 



27 



42 



96 



20 



24 



16 



13 



20 



170 



32 



44 



16 



9 



4 



9 



9 



18 



9 



23 



27 



42 



87 



19 



26 



15 



14 



20 



1,3. Luxor. — Loat. 2. Assuan. — Loat. 4. Nile. — Riippell. 5. Cairo. — Plower. 6,7. Sanhur. — Loat. 



