500 Miscellaneous. 
known, and do not present any pneumatie foramina whatever, which 
resemblance to Ornithopsis in its exce ly coarse structure; 
bs in Megadactylus the lumbar vertebre appear to be absolutely 
ollow. 
ad Mr. Seeley been acquainted with these genera, he would 
probably have referred Ornithopsis to the Goniopod Dinosauria 
rather than to the Ornithosauria. Prof. Cope added that he had 
already (Aug. 1869) published the view that the bone described 
previously as a quadratum of Iguanodon (the type of Seeley's Orni- 
thopsisy-was evidently not a cranial bone, but that he had always 
Supposed it to be a vertebra. 
bones to those of a tortoise could not be overlooked. The speci- 
mens were discovered by Dr. John H. Slack, in Monmouth Co., 
N. J.— Proc. Amer. Phil. Soc. vol. xi. No. 84. 
