ELOPIM. 
49 
head with opercular apparatus, which is contained slightly more 
than twice in the length of the trunk from the pectoral arch to the 
base of the caudal fin. Vertebras about 55 in number, somewhat 
■nore than half of them in the abdominal region ; the centra as 
long as deep in the abdominal, relatively longer in the caudal 
region. Pectoral fins with about 12 or 14 stout rays, all divided 
distally, and the foremost at least half as long as the head 
with opercular apparatus ; pelvic fins not moro than half as large 
as the pectorals, with 7 or 8 rays, arising opposite a point just 
behind the hinder extremity of the dorsal, not far from the remote 
anal fin ; dorsal fin slightly deeper than long, with 15 or 16 rays, 
arising midway between the occiput and the caudal fin ; anal fin 
much less elevated than the dorsal, with 15-16 rays, arising 
somewhat nearer to the pelvic pair than to the caudal fin, which 
comprises very stout rays. Scales smooth. 
Form. § hoc. Upper Cretaceous : Sahel Alma, Mount Lobanon. 
49534. Fine specimen 0'19 in length, apparently not distorted but 
displaying tho true proportions of the fish indicated in the 
specific diagnosis. One stout and slightly recurved tooth 
is preserved among the remains of the mandible. 
Lewis Coll. 
48069, P. 4749. Two equally large specimens somewhat distorted 
and with open mouth. In the second specimen there are 
parts of three enlarged teeth among the remains of the 
mandible; while some of the branchial arches are ex- 
posed, bearing very fine dentieles on their anterior border. 
The squarnation in both specimens is distinct. Lewis Coll. 
P- 4788. Fine specimen about O' 1 7 in length. Lewis Coll. 
46512-14, 47355, 48071, 48075-76, 48153, P. 9163. Nine smaller 
and more imperfect specimens, variously distorted. 
No. 47355 might be interpreted as exhibiting two slender 
teeth in the premaxilke smaller than those of tho man- 
dible, but the specimen is too much crushed and broken 
to be conclusive. In No. 48075 some of tho hinder ribs 
seem to have been broken and repaired during the life of 
the animal. Lewis Coll. 
P- 9191. Fine specimen wanting the caudal fin. Immediately behind 
the head the triangular lower end of the preoperculum is 
shown, marked with radiating ridges; and the operculum 
is clearly narrow and deep. The neural spines are 
?AKT IV. K 
