ONATHONEMUS. , 95 



** No mental appendage. 

 D. 17-20 ; A. 25-28 ; L. 1. 51-58 ; depth 



of body 35—3^ times in total lenoth . . (j. G. n'lger, Gthr., p. 101. 

 D. 24-25 ; A. 30-31 ; L. 1. 55-GO ; depth 



of body 3^4 times in total length . . 1 . G. leopoldlums, Blgr., p. 102. 



/3. Caudal peduncle 2|— 3 times as long as deep. 

 * Depth of body 5-5^ times in total length. 



D. 19 ; A. 31 ; L. 1. G5 8. G./riteli, Pellegr., p. 103. 



D. 23 ; A. 34 ; L. 1. 58 9. G. hentleyi, Blgr., p. 103. 



** Depth of body 3-4 times in total length. 

 D. 21-24; A. 28-31 ; L. 1. G2-G5 . . . .10. G. llvingstonii, Blgr., p. 104. 



D. 2G; A. 33; L. 1. 55 11. G. 6r»7/m7, Pellegr., p. 105. 



D. 28-33 ; A. 36-43 ; L. 1. 75-80 ; a round 



or oyal mental appendage 12. G. monteh'i, Gthr., p. 105. 



7. Caudal peduncle 4 times as long as deep. 

 D. 29-33 ; A. 3G ; L. 1. 84-85 13. G. menfo, Blgr., p. lOG. 



2, Teeth conical ; depth of body 3-4 times in total length ; caudal peduncle 

 2-3 times as long as deep. 

 a. 12 scales round candal peduncle. 

 D. 28-32 ; A. 35-40 ; L. 1. 70-85 ; pectoral 



extending beyond root of yentral . . 14. G^. stcvilei/aniis, Blgr., p. 107. 

 D. 25-28 ; A. 30-36 ; L. 1.68-72; pectoral 



not extending beyond root of yentral . 15. G. senegalensis, Stdr., p. 108. 

 D. 24-26 ; A. 29-33 ; L. 1. 56-60; mental 



swelling feeble 16. (r. angolensis, Blgr., p. 109. 



h. 14-16 (rarely 12 or 18) scales round caudal peduncle, 

 D. 25-30 ; A. o0-37 ; L. 1. 70-86 . . . 11. G. cyprinoides, L., p. 110. 

 D. 23-25 ; A. 28-32 ; L. I. 50-69 . . .18. G. macrolepidotus, Peters, p. 112. 



B. Dorsal and anal originating in the same yertical, 31-33 ; depth of body 



about '6^ times in total length. 

 L. 1. 78 ; caudal peduncle 3 times as long as 



deep, 12 scales round it 19. G. pidus, Marcus., p. 113. 



L. 1. 85 ; caudal peduncle 4 times as long as 



deep, 14 scales round it 20. G. gilli, Blgr,, p. 114. 



C. Dorsal originating in adyance of anal ; dei)th of body 3^-3^ times in total 



length. 

 1. D. 28-29; A. 27-30. 

 L. 1. 42-43 ; caudal peduncle 4 times as 



long as deep, 8 scales round it . . . 21. G. hduensis, Blgr., p. 115. 

 L. 1. 55 ; caudal peduncle twice as long as 



deep, 12 scales round it 22. G. ussheri, Gthr., p. 116. 



