286 
ACTIXOPTERyGII. 
Genus BXOCCCTOIDES, Davis. 
[Trans. Roy. Dublin Soc. [2] vol. iii. 1887, p. 550.] 
Head relatively large and jaws apparently toothless. Vertebras 
about 35 in number, 15 being caudal; the transverse processes in 
the abdominal region very stout. Rays of paired fins mostly both 
articulated and divided distally, those of median fins articulated 
but not divided. Pectoral fins delicate but very large; pelvic fins 
smaller, with about 7 stout rays, mostly divided distally; dorsal fin 
opposite or somewhat in advance of the pelvic pair, with only about 
7 undivided rays ; caudal fin rounded, not forked. [Squamation 
unknown.] 
Exocoetoides minor, Davis. 
1887. JExocoetoides minor, J. W. Davis, loc. cit. p. 551, pi. xxvi. 
figs. 1, 5. 
1895. Exocoetoides minor, D. G. Kramberger, Djela Jugoslav. Akad. 
vol. xvi. p. 39, pi. viii. fig. 2. 
1899. Exocoetoides minor, A.. S. Woodward, Ann. Mag. Nat. Hist. [7] 
vol. iv. p. 319. 
Type. Imperfect fish : British Museum. 
The type species, attaining a length of about 0’06. Length of 
head with opercular apparatus nearly half as great as the length 
from the pectoral arch to the base of the caudal fin. Pectoral fins 
with about 15 rays, the longest when adpressed to the trunk 
reaching the anal fin; pelvic fins inserted within the anterior 
quarter of the trunk and their longest rays less than half as long 
as the pectorals; dorsal fin entirely in advance of the pelvic pair 
and its longest rays much shorter than the pectorals ; anal fin very 
small, with 7 rays, separated from the caudal fin by a space about 
equal to the length of its hase-line. 
Form. Loc. Upper Cretaceous : Hakel, Mt. Lebanon. 
P. 4756. Type specimen figured by Davis, loc. cit. fig. 1, displaying 
all the characters mentioned in the generic and specific 
diagnoses. The anal fin is termed dorsal ” by Davis. 
Lewis Coll. 
P. 8685. Another fine specimen, dorsal aspect. Purchased, 1897. 
P. 6003. Imperfect small specimen. Lewis Coll. 
The two following specimens may perhaps be immature examples 
of this species, but the length of the head with opercular apparatus 
is contained three times in the length from the pectoral arch to the 
