596 
PLATE LXV. 
Fic, 1. PHoDERACANTHUS GRANDIS, Davis, ; ; ; : : 5 
,», 1a, Section of the spine near the apical extremity. 
Mt. Limestone, Bristol, . Ex coll, Earl of Ducie, Tortworth Court. 
Fic. 2. STICHACANTHUS TORTWORTHENSIS, Davis, . : ‘ , . 
», 2a. Section of the spine near the apical extremity. 
Mt. Limestone, Tortworth, . Hx coll. Karl of Ducie, Tortworth Court. 
Fies.3, 4, ORACANTHUS MILLERI, Agass., ‘ : j 
% : O._9 
Two peculiar bones apparently pertaining to Oracanthus. 
» 9% External surface with similar ornament to the dermal coverings of Oracanthus. 
» 3a, Section of spatulate portion of the same. 
» 4. Internal aspect of another specimen. 
» 4a. Section of the same. 
Mountain Limestone, Armagh, : Lx coll. Enniskillen Collection. 
uy 
525 
