256 
ACTIN OPTERYGII. 
35383, 36158. Two fragmentary portions of splenial bone, probably 
of this species; Cambridge. Purchased, 1860, 1861. 
Coelodus cantabrigiensis, A. S. Woodward. 
1895. Coelodus cantabrigiensis, A. S. Woodward, Geol. Mag. [4] vol. ii. 
p. 208, pi. viii. fig. 2. 
Type. Right splenial, with dentition; British Museum. 
A large species, known only by the splenial dentition. Teeth on 
the splenial bone smooth ; those of the principal series scarcely 
more than twice as broad as long, and nearly equal in width to the 
two flanking series; inner flanking teeth twice as broad as long, 
and twice as broad as the teeth of the outer series, which are 
scarcely broader than long; a row within the principal series 
represented by few small teeth. 
Form. Sf Loc. Cenomanian : Cambridge. 
P. 7236. The type specimen described and figured, loc. cit .; Cam¬ 
bridge Greensand. Jesson Coll. 
Coelodus fimbriatus, A. S. Woodward. 
1893. Coelodus jimbriatus, A. S. Woodward, Geol. Mag. [3] vol. x. 
p. 491, pi. xvii. fig. 6. 
Type. Right splenial dentition; British Museum. 
A large species, known only by the splenial dentition. Teeth of 
principal series on the splenial bone smooth or feebly crimped round 
the margin, somewhat less than three times as broad as long, about 
equalling in width the two outer series, which are nearly similar in 
size, irregular in form, slightly broader than long, and having a 
deep coronal pit with rugose or crimped margin. 
Form. Sf Loc. Turonian : Kent. 
43090. Type specimen ; Lower Chalk, Hailing, Kent. 
Wetherell Coll. 
. a'wFI . 
Coelodus parallelus (Dixon). 
1850. Pycnodus parallelus, F. Dixon, Geol. Sussex, p. 369, pi. xxxiii. 
fig. 3. 
1888. Coelodus parallelus, A. S. Woodward, Proc. Geol. Assoc, vol. x. 
p. 308. 
Type. Imperfect splenial dentition ; Brighton Museum. 
A large species known only by the splenial dentition. Teeth of 
