C.HBYSICHTHYS. 



interneural shield ; snout obtusely pointed, not much broader than long; 



eye large, transversely oval, its diameter 1 (young) to 2^ times in length 



of snout, 3 to 6 times in length of head, not more than If times in 



interorbital width; mouth inferior, its width 2-^ to 4 times in length of 



head ; prsemaxillary band of teeth straight, ^ to 3-^ times as long as 



broad ; vomero-pterygoid teeth forming a narrow band interrupted in 



the middle, sometimes reduced to the vomerine part ; nasal barbel -j to 



-^ diameter of eye; maxillary barbel \ to ^ length of head; outer 



mandibular barbel a little longer than inner, f to f the length of the 



maxillary barbel. Gill-rakers rather long, 12-17 on lower part of 



anterior arch. Dorsal I 6, 1-^ to 1-^ times as distant from root of caudal 



as from end of snout ; spine \ to f length of head, smooth or granulate 



in front, rather feebly serrated behind ; second soft ray longest, f to 



1-g- times length of head. Ease of adipose fin shorter than that of 



dorsal, from which it is separated by a space equal to 2 to 4 times 



its base. Anal 12-14, 8 or 9 (rarely 7) rays branched. Pectoral f- to 



j length of head ; spine smooth or feebly granulate on outer border, 



strongly serrated on inner. Caudal deeply forked, upper lobe longest 



and often produced into a filament, at least 3 times as long as middle 



rays. Caudal peduncle 1-g- to If times as long as deep. Dark grey or 



brown above, silvery white beneath ; a more or less indistinct dark 



transverse band behind the head and another in front of the dorsal fin. 



Total length 370 milliin. 



West Africa, from the Senegal to the Ogowe. — Type in Paris 

 Museum. 



St. Louis, Senegal. 



Katkli, „ 



Gambia. 



B. Prali, Gold Coast. 



R. Offin, 



Nyankoma, „ 



Lagos. 



M. P. Delhez (C). 



J. S. Budgett, Esq. (P.). 

 11. B. N. Walker, Esq. (P.). 



Niger. 



Lokoja, Upp. Niger. 



Assay, Low. Niger. 



Sapelle, „ 



Benue R., North of. Ibi. 



Enyong R., Old Calabar. 



Kribi Pi., Cameroon. 



H. T. Ussher, Esq. ((J.). 



Mr. J. T. Dalton (C). 

 J. S. Budgett, Esq. (P.). 

 Dr. W. J. Ansorge (C). 



a 



H. L. Norton Traill, Esq. (C.) . 



Major W. A.C. Cockburn (P.) . 

 G. L. Bates, Esq. (C). 

 T2 



