APPENDIX C. 
245 
I have seen heads of individuals which must have weighed twelve 
pounds at least. 
Hydrocyon brevis, Gthr. (Plate III.^ Fig. A.) 
D. 10. A. 16. V. 10. L. lat. 49—50. L. transv. 9/5. 
Very similar to H. forskalii, hut with a shorter body, and with 
more scales below the lateral line. 
The height of the body is contained thrice and a half or thrice 
and two-thirds in the total length (without caudal) , the length of 
the head four times or thrice and four-fifths. There are three 
series of scales between the lateral line and the elongate scale at 
the root of the ventral fin. The upper jaw with five or six teeth 
on each side, the lower with four. Silvery, each series of scales 
above the lateral line with a very faint darker longitudinal streak. 
Upper Nile. 
UisTicHODUS. (Nefasch.J 
Body compressed, covered with small scales. Dorsal fin rather 
long, placed in the middle of the length of the body, above the 
ventrals ; a small adipose fin behind the dorsal ; anal of moderate 
length; caudal and adipose fins covered with small scales. Body 
oblong, covered with small scales. Belly rounded. Cleft of the 
mouth transverse, small ; intermaxillary and mandible with a series 
of flattish bicuspid incisors; there is generally another series of 
