339 
An imperfectly known species, represented only by small speci¬ 
mens not exceeding 0-1 in length. Length of head with opercular 
apparatus contained about seven times in the total length to the 
base of the caudal fin ; anal fin less than twice as long as the portion 
of trunk in front of it. 
A specimen of this fish in the Museum of the Syrian Protestant 
College, Beyrout, displays the caudal fin very clearly. 
Form. Loc. Upper Cretaceous: Hakel, Mount Lebanon. 
P. 4372. Type specimen, shown of the natural size in PI. XYIII. 
fig. 3. The remains of the head are very imperfect, but 
present no features at variance with the interpretation of 
the afiinities of the fish here suggested. The opercular 
apparatus is wide in proportion to its depth, and there 
seems to be a suboperculum between the operculum and 
the very slender branchiostegal rays. The latter are long, 
but not curved upwards behind. The two sigmoidally 
bent clavicles, with pointed ends, are partly shown ; and 
there are traces of the scapular arch supporting a delicate 
pectoral fin. The vertebral column is imperfectly pre¬ 
served, but throughout its length the expanded neural 
arches are shown to be relatively large. There are 
impressions of short, slender ribs in the abdominal region, 
while the neural and haemal spines are stouter, though 
still slender in the caudal region. The rays of the dorsal 
and anal fins are very fine and difficult to observe. The 
former seems to extend along the whole length of the 
back, but in the abdominal region it is- imperfectly pre¬ 
served and crushed downwards upon the vertebral 
column. So far as preserved, the anal does not attain 
much more than half the extent of the dorsal fin. The 
imperfectly preserved caudal fin is clearly separate, and 
is formed of somewhat stouter rays supported by ex¬ 
panded hmmal spines. Lewis Coll. 
P. 4872 a. Pragmenfc. Lewis Coll. 
P. 9423. Very small specimen, apparently showing caudal fin. 
Egerton Coll. 
Urenchelys anglicus^ A. S. Woodward. 
1900. Urenchelys anglicus, A. S. Woodward, Ann. Mag. Nat. Hist. [7] 
vol. V. p. 321, pi ix. fig. 1. 
Type. Imperfect head ; Brighton Museum. 
A comparatively large species, the skull attainiug a length of 
z 2 
