POLYPTEKUS. 



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 millira. 



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

 Museum. 



1. 



Ad., 



BtffJ. 



2. 

 3- 

 5. 

 6. 



Hgr. 



4. Ac 



Ad. 



1. & yg. 



7. 



Ad., 



skel. 



8. 



Ad. 

 Ad. 





11 . 



Ad. 





11. 



A<\. 





12. 



Hgr. 





13. 



Yg. 





Khartum. 



Shederali, near Omdnrman. 



Goz Shebesba, Wliite Nile. 

 Near Kawa, ,, 



Goz abu Griunali, ,, 

 Fasboda, „ 



Mouth of Lake No, „ 

 Gondokoro, Bahr-el-Gebel. 

 J.ake (Jhad. 

 Agberi, Lower Niger. 



14, 15, \G. Ad. & hgr., Niger, 

 stffd. 



J. Petherick, Esq. (C). 

 L. Loat, Esq. (C). 



» 



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

 Dr. W. J. Ansorge (0.). 

 Mr. J. T. Dalton (C). 



5. POLYPTERUS WEEKS1I. 



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. 



PiK. 7. 



Polypterus weelcsii. 

 Youug, type (P. Z. S. 1902). 



Body depressed. Head 1+ to If times as long as broad, i\ to 5A 

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

 interorbital region ; snout projecting slightly beyond the lower jaw ; 

 eye 7 (young) to 9-^ times in length of head, 21 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 



