Davis—On the Fossil Fishes of the Chalk of Mount Lebanon. 581 
The dorsal fin extends 0°5 of an inch along the surface of the back; it is 
1.0 inch from the head and 1°5 inch from the tail; it is composed of ten rays, 
the longest 0°8 of an inch in length. The anal fin is 0:4 of an inch in front 
of the caudal; it is very imperfectly preserved. The caudal is composed of 
eighteen branching rays, the two lobes separated by a deep cleft; the longer 
rays are 0-9 of an inch in length; both lobes are supported by a long series of 
imbricating rudimentary caudal rays, which, on the peduncle of the tail, merge 
to the long imbricating scales already referred to. 
The paired fins are barely indicated by a slight impression of their rays. 
The pectoral fins are small, and at least nine rays entered into the composition 
of each. The ventrals are midway between the pectorals and the anal, exactly 
opposite to the anterior rays of the dorsal. 
The peculiarly long and slender form of this species readily distinguishes it 
from others previously described. The position of the ventral fins, indicated by 
the broken base, is opposite to the anterior rays of the dorsal; and this feature, 
combined with the form of the abdominal scales, leaves no room for doubt that 
the species belongs to the genus Clupea. I have appended the specific name 
C. attenuata, which points out its peculiarity of form. 
Formation and Locality—Upper Cretaceous: Sahel Alma, Mount Lebanon. 
Ex coll_—R, Damon, Esq., Weymouth. 
Clupea elongata, Davis. 
(Pl. xxxin,, fig.2.) 
This fish is chiefly peculiar from the position of the dorsal and ventral fins, 
which are situated far back towards the region of the tail. The fish is small, but 
well preserved. The head, which has been somewhat displaced, is rather less 
than one-third the length of the body, the latter being 3 inches, exclusive of the 
tail. All the fins are preserved; patches of scales remain; they were thin and 
small, but are not sufficiently well preserved to exhibit more special characters. 
The bony framework of the fish is exposed. 
The head is 0:9 of an inch in length, and 0°5 of an inch in height post- 
orbitally ; it has been pressed over so as to exhibit the under surface of the 
jaws and branchiostegal apparatus. The snout is prominent and semi-rotund ; 
the upper jaw has been pressed forward and is displaced to that extent; the 
mandibles are 0°55 of an inch in length, joined together in front, and separating 
backwards with an outwardly sigmoidal curvature. The alveolar surfaces of the 
upper jaws are shown encircling the lower; they exhibit the minute orifices, 
where numerous teeth have been attached. The space between the jaws is filled 
TRANS. ROY. DUB. SOC., N.S, VOL. III, 4K 
