60 MORMYBIDiE, 



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



Total length (without caudal fin) 



Greatest depth 



Length of head 



Width of head 



Leugth 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, above anal 



„ ,, ,, lateral line and anal fin 



„ „ round caudal peduncle 



290 

 71 



09 

 33 

 20 

 7 

 10 

 11 

 27 

 19 

 30 

 75 

 19 

 90 

 22 

 28 

 18 

 10 

 30 



250 



52 

 00 

 28 

 17 



6 

 12 



9 

 25 

 IS 

 31 

 75 

 19 

 92 

 25 

 27 

 10 

 10 

 28 



20b 



185 



44 



44 



48 



45 



24 



22 



13 



13 



6 



5 



11 



11 



7 



7 



19 



18 



13 



13 



30 



27 



72 



69 



20 



18 



96 



91 



23 



2d 



27 



28 



16 



17 



15 



14 



30 



30 



1. Polkom, Baro E-. — Zaphiro. 



2. Kenisseh. — Loat. 



3, 4, 5. Fashoda. — Loat. 



snout ; chin slightly swollen ; teeth small, notched, 10 or 12 in the upper jaw, 12 or 14 

 in the lower ; diameter of the eye seven to eight and a half times in the length of the 

 head, two-fifths to one-half the length of the snout, two-fifths to one-half the interorbital 

 width. Dorsal with 67 to 75 rays, its base four to five times as long as that of the anal, 

 and once and. a half to once and three-fifths as long as its distance from the end of the 

 snout, originating well in advance of the vertical of the ventral fins, subequal in depth 

 throughout. Anal fin with 17 to 20 rays, originating a little nearer to base of caudal 

 than to base of pectoral, its longest rays longer than those of the dorsal. Pectoral fin 



