CHONDKOSTEID-aS 
41 
P. 3356 m. Series of vertebral arches, each with a posterior ex¬ 
pansion at the base and a truncated distal end which 
seems to have been originally invested with cartilage. 
The fossil probably represents the haemal arches of 
Gyrosteus mirabilis in the region of the caudal fin. 
Enniskillen Coll. 
P. 3356 b. Eight supraclavicle, shown of one-sixth the natural size, 
from the inner aspect, in fig. 16, figured loo. cit. p. 34, 
fig. 6. Enniskillen Coll. 
P. 3356 c. Portion of caudal fin displayed in irregular section, 
shown of one-third the natural size in fig. 17, described 
and figured loc. cit. pp. 35, 36, fig. 7. The stout, closely- 
articulated and distally-bifurcating rays are well exhi¬ 
bited. Enniskillen Coll. 
Caudal fin-rays of Gyrosteus mirabilis ; one-third nat. size. [No. P. 3356 c?.] 
