lOG 



SEERANID.^. 



p. 3G2 (1895) ; Tfeff . Thievw. O.-Afr., Fische, p. 2, fio-. (LSOi)) ; Boulen<?. 

 Poiss. Bass. Congo, p. 381 (11)01) ; Lortet & Gaillard, Arcli. Mu-'. Lyon, viii. 

 1903, p. 188, figs.; Bouleng. Fish. Nile, p. 452, pis. Ixxxiv. & Ixxxv. (1907). 



Depth of body 2^ to 4 times in total length, length of head 2f to 3^ 

 times; shape very variable, the upper outline of the head usually more 

 or less concave. Snout rounded, as long as or a little longer than eye 

 (much longer in very large specimens); lower jaw projecting; eje 4 

 (young) to 7 times in length of head, -f to 1^ times in interorbital width ; 

 maxillary extending to below posterior border of eye or b(7()nd, the 

 widtii of its distal extremity at least three-fourths diameter of eye ; prir- 

 and suborbitals finely serrated ; cheek, gill-cover, and occiput with large 

 scales ; prseopercular border forming nearly a right angle, finely serrated 



Fi^. 82. 



Latts lidot'icas. 

 Khartum (F. N.). 



on vertical limb, wiih 3 or 4 strong spines on lower limb, and with 

 one or two still stronger spines at angle ; a single opercular spine ; 

 clavicle with some strong denticulations above the base of the pectoral 

 fin. Gill-rakers rather long, 15 to 17 (including knob-like rudiments) 

 on lower part of anterior arch. Dorsals Vll-VlII, I-II 10-14, 

 connected at the base ; spines strong, first and second sliort, third very 

 strong, longest ^ (adult) to | (young) length of head, usually as long as or 

 longer than longest soft rays. Anal 111 7-0; s})ines short, second and 

 third equal or third h)ng(\st. Pectoral nearly I lo ;-| length of head. 

 Caudal roundcMl. All the soft vavs of the vertical lins i., ore or less densely 



