i'OLYPTERUS. 



n 



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

 detached spots ; lips and tins with bhickish 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. 



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

 Museum. 



Kliai'tum. 



1. A(]., stffii. 



2. Hgr. 



3-4. Ad. & yg, 



5. Yg. 



(]. Ad. 



7. Ad., skcl. 



.s. Ad. 



it. Ad. 



1( . Ad. 



11. Ad. 



12. Hgr. 



13. Yo-. 



Sliederali, near Oindurman. 

 <_ioz IShebeslia, Wiiite Nile. 

 Near Kavva, „ 



Goz ahu (riiiiiali, ,, 

 Faslioda, „ 



Mouth of Lake No, ,, 

 Gondokoro, Bahr-el-Gebel. 

 Lake ('had. 

 Agberi, Lower Niiier. 



14, 15, ](]. Ad. it hgr., Nigt-r. 

 stftVl. 



J. Petherick, Esq. (C), 



55 



L. Loat, Esq. (C). 



Oapt. G. B. Gosling (P.). 

 Dr. W. J. Ansorge (C). 

 Mr. J. T. Dalton (C). 



5. POLYPTERUS WEEKSIL 



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. 



Ficr. 7. 



Polypterus ireeJcsii. 

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



Body depressed. Head 1^ to If times as long as broad, 4^ to 5-| 

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

 interorbital region ; snout projecting slightly beyond the low^er jaw ; 

 eye 7 (young) to 9-J- 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 betw een postorbital and spiracular 



