DISTICHODUS. 

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



147 





1. 



2. 



3. 



4. 



5. 



6. 



7. 



8. 



Total length (without caudal) 



200 

 80 

 52 

 27 

 14 

 11 

 25 

 14 

 40 

 33 

 38 

 38 

 23 

 13 

 88 

 20 

 24 

 19 



170 

 71 

 42 

 21 

 14 

 10 

 21 

 13 

 35 

 27 

 31 

 31 

 21 

 14 

 80 

 18 

 24 

 19 



130 

 48 

 34 

 17 

 12 

 8 

 16 

 10 

 27 

 20 

 23 

 23 

 21 

 15 

 90 

 18 

 22 

 20 



115 



48 

 31 

 15 

 10 



8 

 15 



8 

 27 

 22 

 21 

 22 

 22 

 13 

 90 

 20 

 23 

 18 



100 

 40 



27 

 13 

 9 

 7 

 12 

 8 

 22 

 18 

 18 

 18 

 23 

 14 

 86 

 17 

 22 

 19 



70 



26 



20 



10 



7 



6 



8 



6 



15 



11 



12 



12 



21 



14 



91 



19 



23 



18 



66 



22 



19 



9 



6 



6 



8 



5 



13 



11 



11 



11 



22 



14 



90 



18 



24 



19 



36 



12 



12 



6 



4 



4 



5 



3 



8 



5 



7 



6 



23 



14 



80 



20 



24 



20 



Greatest depth 



Length of head 



Width of head 



Length of snout 



Diameter of eye 



Interorhital width 



Width of mouth 



Longest ray of dorsal 



,, ,, anal 



Length of pectoral 



,, central 



Number of dorsal rays , . 



,, anal rays 



„ scales in lateral line 



„ „ in transverse series above lateral line .... 

 5> ., „ „ below lateral line .... 

 ,, „ between lateral line and ventral 



1, 2. Fashoda. — Loat. I 



3, 5. Khartum. — Petherick. 



4. Kaedi, Senegal. — Delhez. 



Specimens examined : — 



Khartum.— Petherick, 1862. (Types.) 



Fashoda.— Loat, 19.1.01-25.3.01. 



Yo River, Lake Chad.— Capt. Gosling, 1904. 



Kaedi, Senegal.— Delhez, 1899. 



Jebba, Upper Niger.— Capt. G. F. Abadie, 1899. 



Agberi, Lower Niger.— Dr. Ansorge, 1902. 



Assay, Lower Niger.— Budgett, 1903. 



R, Benue, north of Ibi. — Norton Smith, 1906. 



6. Yo R., L. Chad.— Gosling. 



7. Agberi, Niger. — Ansorge. 



8. Assay, Niger. — Budgett. 



u2 



