Davis—On the Fossil Fishes of the Chalk of Mount Lebanon. 599 
pectorals; the rays are articulated and bifurcate. Their attachment is under and 
opposite to the eighth ray of the dorsal fin. 
The presence of scales is indicated in some places, but they are unfortunately 
not well preserved. There is a cast of the third large scale, which extends 
backwards from the occipital region of the head; it is semi-oval, 0:3 inch in 
diameter, and indicates a radiating structure of the under surface. The two 
anterior scales or plates are absent, the matrix being broken. There are also 
fragments of dermal scutes on the lateral surface of the body; they are there, 
but not sufficiently well preserved to afford matter for description. The upper 
margin of the row of scutes extended in a line above the vertebral column in the 
anterior part of the body, gradually converging to it midway to the tail, and 
thence all trace is lost. 
This species differs from those previously described from the chalk of Lebanon 
most especially in the position of the paired fins. The description of Eurypholis 
longidens from Sahel Alma was made from imperfect specimens, the remains 
of the paired fins affording little information as to their character. The fins of 
E. boissieri were, however, well preserved, and described and figured by M. Pictet 
with considerable detail. The pectorals are attached midway between the ventral 
line and the row of lateral scutes; they were small. ‘The ventral fins are attached 
to an osseous piece, triangular in form, which extended to a point just behind 
the posterior termination of the opercular apparatus, at no great distance behind 
the pectoral fins. In this species the pectoral fins are attached to the under 
surface of the body instead of the sides, and the ventral fins are situated far back 
beneath the dorsal. 
Formation and Locality.—Soft chalk: Sahel Alma. 
Ex coll.—Lewis Collection, Natural History Department, British Museum. 
Genus. Pantopholis.* Davis. 
Fish moderate size; head with strong jaws armed with conical pointed teeth ; 
gape wide; branchiostegal rays numerous; vertebral column large and strong ; 
hzmal processes and ribs attached to each vertebra; pectoral fins equal in length 
to the height of the body. A series of plates extend along the dorsal surface of 
the body, from the head backwards, apparently the whole length of the body. 
The principal distinguishing characteristic of this genus consists in the long 
series of dorsal plates. To some extent it resembles Eurypholis, Pictet, which 
has three plates immediately behind the occiput; the two genera differ not only 
in the number of the plates, but those of Eurypholis are proportionately very 
much larger than, and differ in form from, those of the genus now described. 
* ravrovos, manifold; oArs, a scute. 
4M2 
