580 Davis—On the Fossil Fishes of the Chalk of Mount Lebanon. 
The pectoral fins are attached to the scapular arches, and are abdominaily 
situated ; they are not well preserved. The rays are strong, and of considerable 
length. The ventral fins are situated immediately beneath the anterior portion 
of the dorsal. The fin-rays are strong, and are attached to a moderately large 
pelvic bone. 
This specimen, in its general features, appears to be closely related to the 
genus Clupea; the arrangement of the fins and the internal anatomy is similar ; 
it is peculiar in the great number of the vertebra, and in this respect differs 
from any other species previously described. It is proposed to distinguish this 
species by the name curta, indicating its short though high and somewhat 
bulky form. 
Formation and Locality.—Upper Cretaceous: Hakel, Mount Lebanon. 
Ex coll.—Professor Lewis; in the cabinet of R. Damon, Esq., Weymouth. 
Clupea attenuata, Davis. 
(Pl. xxx, fig. 4.) 
This fish presents a peculiarly elongated form; the whole length is equal to 
seven times the height. The body and head are well preserved. The caudal, 
a pectoral, and a portion of the dorsal fins are present, and sufficient remains to 
indicate the position and character of the ventral and anal fins; it is 3-6 inches in 
length without the tail, and that fin adds 0-9 of an inch; the head is 1:0 inch 
in length; the greatest height is 0°9 of an inch before the dorsal fin; the peduncle 
of the tail is 0°3 of an inch. The body is covered with scales; they were 
probably thin, and now present a more or less homogeneous mass; the form of 
individual scales, with the exception of those on the abdominal surface, cannot 
be distinguished ; the abdominal ones are elongated, with an obliquely imbricating 
arrangement towards the caudal extremity. 
The post-orbital region of the head is 0°6 of an inch in height, the length being 
1:0 inch. The lower jaw is long, armed with minute teeth, ex velours, at its 
anterior extremity; the under surface of the jaw is pitted; the orbit is situated 
on the anterior portion of the head; it is large. The operculi are large, and 
consist of four bones, the pre-operculum, the operculum, the sub-operculum, and 
the inter-operculum, the two latter forming the lower portion of the gill cover. 
Branchiostegal rays were present. 
The spinal column is composed of fifty-eight vertebree ; they are ‘05 of an inch 
in diameter, and the same length; the ribs are thin and fine, with branching 
epiplural bones. The neural and hemal spines are numerous as the vertebre. 
Ten interneural spines support the dorsal fin, the two anterior ones being both 
longer and stronger than the others. 
