36 
ACTIXOPTERYGII. 
Pig. 7. 
Parasphenoid of Gyrosteus mirabilis, inferior aspect, one-fourth 
nat. size. [No. P. 2262 a.] 
Pig. 8. 
Parasphenoid of the recent Acipenser, inferior aspect. 
P. 3356 g. Hore imperfect parasphenoid associated with other 
fragments. Enniskillen Coll. 
P. 3356 a, h. Two examples of the hyomandibular, ossified appa¬ 
rently as far as the distal border, the first shown of one- 
third the natural size, from the lateral and posterior 
aspects, in fig. 9 ; described and figured loc. cit. pp. 3 2, 33, 
“* Enniskillen Coll . 
P. 3356 k. Hyomandibular probably of young, wanting the ossifi¬ 
cation of the expanded extremities. Enniskillen Coll. 
