176 
ACTINOPTERYGII. 
49536. 
ridged but apparently unornamented. On the ventra 
border of the caudal region each scute bears a 'vel 
developed, posteriorly-directed uncinate spine ; and near j 
the whole sories here is exposed in side view, fecutes o 
this kind are similarly observed in the fragmentary t)p e 
specimen described by Pictet. The scutes of the flan s 
are smaller and more delicate, but not clearly shown. 
Near the dorsal border of the anterior abdominal region 
some of these occur in a regular series, apparently pierce 
by the slime- canal of the lateral line, and having t e 
anteriorly-directed pierced ray very large in comparison 
with the others. Somewhat largor scutes of the same 
form appear again in series below the vertebral column m 
the neighbourhood of the pelvic tins ; and others seem to 
be crushed upon the transverse processes of the vertebra?^ 
the same region. Remains of lath-shaped plates on ^ 
flank are also distinguishable on the anterior half of t ® 
caudal region. Lewis Co 
A larger fish, wanting the greater part of the head but 
displaying the dorsal fin, noticed by Davis, loc. cit. p. " ’ 
Sahel Alma. About 70 vertebrae can be distinguis > 
and those in the hinder part of the abdominal region 
exhibit the usual very large transverse processes, from 
extremities of which very slender and neatly straight ri 
are suspended. The remains of the paired fins are too 
fragmentary for description ; but the pelvic pair seems o 
be in its natural position, arising just behind a P l,in 
opposite the origin of the dorsal, and its rays are shown 
to be finely divided distally. The dorsal fin occupies 
nearly the middle third of the back, the distance between 
its origin and the occiput about equalling that betweei 
its termination and the caudal fin. All its rays are 
simple in the proximal half, but articulated at WI ® 
intervals and subdivided in the distal half. Thefoiemo- 
two or three rays are shown only in impression, but 
others are well-preserved, and the total number seems 
bave been about thirty-five. About twelve of the him cr 
most rays are much more delicate and shorter than t 
others. The final fin is wanting, but the caudal fin 1 
preserved, showing the cluster of basal scales above an 
the distant articulations of its rays. The dorsal an 
ventral marginal scutes are preserved, but noarly all ar ' 
