CITHAEINUS. 



157 



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



Total length (without caudal) 



Greatest depth 



Length of head 



Width of head 



Length of snout 



Diameter of eye 



Jnterorbital width 



Width of mouth 



Longest ray 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 



1. Niger. 



2, 3, 6, 7. Gondokoro.— Loat. 

 4. Lokoja, Niger. — Budgett. 



5. Beni Souef. — Loat. 



8. Mangara, White Nile.— Loat. 



9. Kaedi, Senegal. — Delhez. 



1. 



2. 



3. 



4. 



5. 



6. 

 140 



7. 

 100 



8. 

 92 



9. 



80 



380 



310 



290 



220 



160 



195 



190 



180 



130 



96 



78 



55 



52 



44 



97 



87 



80 



62 



45 



37 



30 



28 



24 



54 



45 



43 



32 



24 



19 



15 



14 



12 



25 



20 



16 



14 



10 



9 



7 



7 



6 



22 



20 



20 



16 



14 



11 



9 



8 



"t 



45 



36 



33 



27 



21 



16 



12 



12 



10 



35 



33 



31 



22 



17 



15 



11 



10 



8 



107 



90 



90 



75 



67 



62 



40 



37 



30 



46 



49 



48 



39 



34 



28 



9 



16 



15 



80 



65 



64 



49 



37 



30 



20 



21 



17 



80 



66 



68 



53 



42 



34 



25 



25 



20 



22 



21 



22 



21 



21 



21 



22 



21 



22 



25 



23 



24 



26 



25 



24 



25 



25 



25 



65 



64 



71 



67 



63 



70 



67 



65 



65 



18 



17 



19 



18 



16 



17 



17 



16 



16 



18 



18 



20 



19 



18 



19 



18 



18 



18 



14 



14 



16 



15 



14 



14 



14 



14 



14 



caudal than the end of the snout. Adipose fin rather large, its base once and one- 

 sixth to twice and a half its distance from the rayed dorsal. Anal fin with 23 to 

 26 rays, 3 or 4 of which are unbranched; anterior rays forming a produced, pointed 

 lobe, measuring one-half to two-thirds the length of the head ; base of fin not longer 

 than its distance from the base of the ventral. Pectoral fin two-thirds to three-fourths 

 length of head, as long as or a little shorter than the ventral, reaching, or not quite 

 reaching, the base of the latter. Caudal fin deeply forked, with pointed lobes. Caudal 



