8 GOBI 1D.£. 



simple and G to 12 branched rays. Anal similar to second dorsal. 

 Ventral fins distinct. Scales large or small, cycloid or more or less 

 strongly ciliated. 



Coasts and rivers between the tropics ; most of the species confined to 

 fresh waters. 14 species are known from fresh water in Africa. 



Synopsis of the Species. 



I. No praeopercular spine. 



A. Body strongly compressed ; head scaly. 



1. Dorsals VII- VIII, I 8-9, narrowly separated from each other ; 



anal I 9-10; scales ciliated, 28-32 in longitudinal series. 

 Head much deeper than broad ; caudal peduncle 



If to 2 times as long as deep 1. IS. lehretoni, Stdr., p. 9. 



Head as broad as deep ; caudal peduncle H 



times as long as deep 2. E. pleurops, Blgr., p. 10. 



2. Dorsals VI, I 8, rather widely separated from each other. 



Head broader than deep ; A. I 8 ; Sc. 29-32 . 3. E. butis, Ham. Buch., p. 10. 

 Head deeper than broad; A. I 10; Sc. 25-27. 4. E. tohizonce, Stdr., p. 12. 



B. Body not or but feebly compressed. 



1. Scales ciliated, less than 50 in longitudinal series, 9-14 between dorsal 

 and anal. 

 a. Head naked ; 29-39 scales in longitudinal series. 

 D. V, I 9 ; A. I 7 ; So. 29-30 ; caudal peduncle 



twice as long as deep 5. E. nana, Blgr., p. 12. 



D. VI, I 8 ; A. I 5 ; Sc. 30-32 ; caudal peduncle 



twice as long as deep 6. E. uellensis, Blgr., p. 13. 



D. VI, I 8-9; A. I 7; Sc. 32-35; caudal 



peduncle 1£ to If times as long as deep . 7. E. kribensis, Blgr., p. 14. 

 D. VI, 18; A. I 7 ; Sc. 38-39 ; caudal peduncle 



If times as long as deep 8. E. leoiiensis, Blgr., p. 15. 



b. Head scaly ; 35-42 scales in longitudinal series, 12-14 between dorsal 



and final. 



D. VI, I 8; A. I 7 ; depth of body 4-5 times 



in total length ; caudal peduncle 1^ or 1\ [p. 15. 



times as long as deep 9. E. opMocephalus, G. & V., 



D. VI, I 9 ; A. I 7 ; depth of body 5 to 5£ 



times in total length ; caudal peduncle [p. 1G. 



nearly twice as long as deep 10. E. madagaspariensis, C. & V., 



2. Scales cycloid, 90-95 in longitudinal series, 32-35 between dorsal and 

 anal. 



D. VI, I 9; A. 18 11. E. africana, Stdr., p. 17. 



