10 



POLYPTE1U1LE. 



4. POLYPTERUS ENDLIGHERI. 



Heckel, Russegger's Reise Egypt, iii. p. 310, pi. xxii. fig. 1 (18-49) ; A. Dura. 

 Hist Poiss. ii. p. 393, pi. xxiii. fig. 3 (1870) ; Steind. Denkschr. Ak. Wien, 

 xliv. 1882, |i. 52, i>ls. viii. & ix. fig. 2 ; Bouleng. Ann. & Mag. N. H. (7) ii. 

 1898, p. 418, ami Proc. Zool. Soc 1902, i. p. 124, pi. xi. fig. 2 ; Werner, 

 Zool. Jahrb., Sysf. xxi. 1904, p. 271, and Sit/.b. Ak. Wien, cxv. i. 1906, 

 p. 1118 ; Bouleng. Fish. Nile, p. 9, pi. ii. (1907). 



Palypterus senegalensis, part., Giinth. Petlieriek's Trav. ii. p. 268 (1869). 



Polypterus bicMr, part., Giinth. Cat. Fish. viii. p. 326 (1870). 



Body more or less distinctly flattened, at least in front. Head 1^ to 

 If times as long as broad, 4§ to 5f times in total length, much flattened, 

 with supero-lateral eyes and flat or slightly concave interorbital region ; 



Fis. 0. 



Pohftrtenis endlicheri. 

 White Nile (F. Is'.), A. 



lower jaw projecting slightly beyond upper; length of snout 5 to 7 times 

 in length of head ; eye 9 (young) to 15 times in length of head, 2£ 

 (young) to o§ times in the interocular width ; latter more than distance 

 between eye and spiracle ; nasal bones in contact on the median line in 

 the adult; a series of 4 to 6 shields between postorbital and spiracular 

 shields ; suboperculurn much larger than eye. Dorsal with XI-XIV 

 spines, anterior not or but feebly overlapping when folded. Anal 15-18. 

 Pectoral reaching to or beyond vertical of first dorsal spine. 50-58 

 scales in a longitudinal series, 11-15 between occiput and first dorsal 

 spine, 42-46 round middle of body. Grey or greyish olive above; 4 to 

 6 more or less regular broad blackish bands across the back ; on the 



