252 



CHAEACINID.E. 



extremity of upper jaw and 3 at extremity of lower ; naked part of cheek 

 about double the width of suborbital ; upper surface of head rugose with 

 fine striae. Gill-rakers extremely short, rudimentary. Dorsal III 12-14, 

 originating immediately behind vertical of base of ventrals, equally 

 distant from occiput and from caudal, longest ray f to f length of head. 

 Fio-. 192 Anal III 11-14. Pectoral about ^ length of head, as loiig 

 as ventral. Caudal nearly entirely covered with small scales, 

 deeply forked, lobes rounded or obtusely pointed. Caudal 

 peduncle If lo 2 times as long as deep. Scales 91-1 12 j^q^, 

 10-12 between lateral line and root of ventral. Silvery, 

 back pale olive ; a greenish golden streak above lateral line ; 

 blackish spots and marblings sometimes present on back and 

 ■/,'-' sides; fins whitish, except the caudal, which is pale yellow 

 '^^'.-"^ with moie or less numerous black spots. 



''^- 



WI^' 



r: 







JcJUhi/oborus be.<se. 

 White IS'ile (F. N.). 



Total length 190 millim. 



Lower Nile to White Nile ; Chad Basin. — Typos in Paris Museum. 



1-2. Typos of 



/. microlepis. 

 3. Ad. 

 4-6. Ad. 



7. Acl 



8. Ad. 



9-23, 24. Ad. & hgr. Fashoda, 

 2.5. Skel. 



Kliartuni. 



Between Khartum and 



Sobat. 

 Goz Abu Guniah, 



AVhite Nile. 

 North of Kaka, Wbite Nile. 



J. Petherick, Esq. (P.). 



A. L. Buder, Esq. (P.). 

 Mr. P. C. Zaphiro (C.) ; 



W.N. McMillan, Esq. (P.). 

 L. Loat, E.q. (C). 



