POLYPTEEUS. 



11 



sides these bands are directed backwards, or break up into branches or 

 detached spots ; lips and fins with blackish spots, these usually forming 

 transverse lines on the pectorals and ventrals, and oblique wavy lines or 

 vermiculations on the dorsal ; belly white. 



Total length 630 millim. 



AVhite Nile, Bahr-el-Gebel, Lake Chad, Niger.— Type in Vienna 

 Museum. 



J. Petherick, Esq. (C). 

 L. Loat, Esq. (C). 



U, 15, 16. Ad. & hgr., Niger, 

 stffd. 



Capt. G. B. Gosling (P.). 

 Dr. W. J. Ansorge (C). 

 Mr. J. T. Dalton (C). 



5. POLYPTERUS WEEKSII. 



Bouleng. Ann. & Mag. N. H. (7) ii. 1898, p. 419, Poiss. Bass. Congo, p. 24 

 (1901), and Proc. Zool. Soc. 1902, ii. p. 124, pi. x. fig. 4. 



PiR. 7. 



l.-^ 



Polypterus iveeJcsii. 

 Young, type (P. Z. S. 1902). f . 



Body depressed. Head 1^ to If times as long as broad, 4| to b^ 

 times in total length, much flattened, with supero-Iateral eyes and flat 

 interorbital region ; snout projecting slightly beyond the lower jaw ; 

 eye 7 (young) to 9-|- times in length of head, 2^ to 3 times in interorbital 

 width ; a small azygous shield may be present between the nasals in the 

 adult ; a series of 3 or 4 shields between postorbital and spiracular 



