DISTICHODUS. 



149 



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



i. 



2. 



Total length (without caudal) 



Greatest depth 



Length of head 



Width of head v 



Length of snout 



Diameter of eye 



Interorbital width 



Width of mouth 



Longest ra} r of dorsal 



„ „ anal 



Length of pectoral 



„ ventral 



Number of dorsal rays 



anal rays 



scales in lateral line 



„ in transverse series above lateral line . 

 „ „ „ below lateral line - 

 „ between lateral line and ventral 



240 

 100 

 50 

 24 

 18 

 10 

 18 

 10 

 50 

 38 

 40 

 40 

 24 

 13 

 85 

 16 

 17 

 12 



240 

 90 

 47 

 24 

 17 

 10 

 19 

 10 

 44 

 42 

 42 

 42 

 24 

 13 

 80 

 15 

 16 

 11 



110 

 44 



28 

 12 

 9 

 7 

 10 

 5 

 24 

 18 

 20 

 20 

 23 

 13 

 82 

 15 

 17 

 12 



94 

 31 

 23 

 10 



4 

 17 

 13 

 16 

 16 

 24 

 13 

 80 

 15 

 17 

 12 



65 



23 



17 



7 



5 



5 



5 



3 



13 



9 



12 



12 



24 



14 



75 



15 



16 



11 



21 



17 



7 



6 



5 



6 



3 



14 



9 



11 



11 



23 



13 



78 



15 



17 



12 



1. Cairo. — Loat. 



2. Sennar. — Loat. 



3. 4. Khartum. — Petherick. 



5. Abo, Niger. — Ansorge. 



6. Wad Medine, Blue Nile.— Loat. 



