APPENDIX C. 
223 
caudal), the length of the head one-fifth ; the greatest width of the 
head equals its length without snout. The lower jaw is the longer, 
the depth of the cleft of the mouth is two -fifths of its width. Nasal 
barbels shorter than those of the maxillaries, which are half as long 
as the head ; the posterior mandibulary barbels are three times or 
four tinaes as long as the anterior, and somewhat longer than those 
of the maxillaries. The diameter of the eye is one-sixth of the 
length of the head. The dorsal fin is situated entirely before the 
ventral, and the width of its base equals that of 'the latter; its 
height is less than the length of the head, the length of its spine 
being three-quarters of the latter ; spine finely serrated posteriorly. 
The anal fin terminates at a short distance from the caudal, which 
is deeply forked, with pointed lobes. The pectoral spine is stronger 
than that of the dorsal fin, and terminates at some distance from 
the root of the ventral ; it is finely serrated along its inner edge. 
A large blackish blotch on the origin of the lateral line. 
Schilbe dispila, Gthr. 
D. lb. A. 56. P.1/11. V. 6. 
The height of the body is contained four times in the total length 
(without caudal), the length of the head four times and two-thirds; 
the greatest width of the head equals its length without snout. The 
lower jaw is the longer; the cleft of the mouth twice as broad as 
long. Nasal barbels shorter than those of the maxillaries, which 
extend to the end of the head ; the posterior mandibulary barbels 
are much longer than the anterior, and are as long as those of the 
maxillaries. The diameter of the eye is two-ninths of the lengtli 
