Davis—On the Fossil Fishes of the Chalk of Mount Lebanon. 579 
inch in length. The ventral fins are opposite the anterior portion of the dorsal 
fin: they are a moderate size and consist of eight fin-rays. 
This species appears to be most closely related with Clupea elongata, Davis. 
The small proportion of caudal vertebrz and the posterior position of the dorsal, 
ventral, and anal fins are similar in both specimens. In this one, however, the 
proportion of caudal vertebree is smaller than in C. elongata. The fish is much 
shorter in proportion to its height—a character in which the head shares equally 
with the body. In C. elongata the dorsal fin is supported by twelve fin-rays; 
in the species now described there are sixteen fin-rays; whilst in the anal fin 
of the latter there are ten rays, in the former the fin is much longer, and contains 
eighteen fin-rays. 
Formation and Locality.—Upper Cretaceous: Sahel Alma, Mount Lebanon. 
Ex coll.—Professor Lewis’s Collection; R. Damon, Esq., Weymouth. 
Clupea curta, Davis. 
(Pl. xxxm1., fig. 5.) 
A fragment only, comprising the post-orbital region of the head and the 
anterior portion of the body. The dorsal, pectoral, and ventral fins are present ; 
the ventrals are opposite to the dorsal; the latter are less than the height of 
the fish behind the occiput, from which it may be inferred that the fish was a 
short one. The length preserved is about six inches; the height of the body 
in front of the dorsal fin is 8 inches; of the length 2°5 inches are comprised 
in the head, the remainder in the body. The scales are of moderate size, 
imbricating, rounded, with smooth edges. The lateral line is high, considerably 
above that of the vertebral column. 
The head is imperfectly represented. The operculum, sub-operculum, and 
inter-operculum are preserved : they are large and strong, well rounded posteriorly. 
The spinal column consists of forty-eight vertebre in the portion preserved ; 
there were probably eighty to (ninety in the complete fish. The vertebre are 
0-25 of an inch in diameter, and their length is equal to one-third the diameter ; 
those situated behind the dorsal fin are longer and of less diameter. The neural 
spines are supported by long and fine neurapophyses, and interneural spines 
support the dorsal fin. The ribs are long, well curved, and tolerably strong. 
The dorsal fin is placed 2:0 inches behind the head, and extends along the 
dorsal surface of the fish 1°5 inch. The fin-rays are strong, divided deeply 
at the base where attached to the interneural rays. The third or fourth rays 
are longest, being about 1°3 inch when perfect; 1 inch only is preserved; 
the distal extremity is articulated. There are eighteen rays; anal and caudal 
fins absent. 
