. Cope papers, 1871-[1897. Zoology; Paleontology. ZOOLOGY. 209 lamiiiJB. I can find no suture separating these plates from the squamosal above, and am therefore disposed to doubt whether they do not belong to these rather than to the parietals. The ? epiotic is a subovate bone with truncate extremities, which has its long axis directed upwards and inwards. It is in contact with the parietal and the descending anterior plate of the squamo- sal, and inferiorly with the bone described in the next paragraph as prootic. It occupies a position similar to that seen in Sphenodon, excepting that it doe
. Cope papers, 1871-[1897. Zoology; Paleontology. ZOOLOGY. 209 lamiiiJB. I can find no suture separating these plates from the squamosal above, and am therefore disposed to doubt whether they do not belong to these rather than to the parietals. The ? epiotic is a subovate bone with truncate extremities, which has its long axis directed upwards and inwards. It is in contact with the parietal and the descending anterior plate of the squamo- sal, and inferiorly with the bone described in the next paragraph as prootic. It occupies a position similar to that seen in Sphenodon, excepting that it does not appear to extend to the quadratum. It might be questioned whether this bone is not really the prootic. The element below and anterior to it (fig. 5, Pro) is emarginated for the exit of the fifth nerve (V) ; and though I cannot find its inferior borders, and the portion behind the above foramen is nar- row, it appears to me to answer more nearly to the prootic of. Fig. 6. — (Cranium from behind.) Lacertilia than to an alisphenoid, which it would otherwise be. This is the more probable, in view of the fact that the supposed epiotic has its counterpart in Sphenodon, in which case this must be prootic. The fenestra ovale (fig. 6, FO) is not readily discovered, but appears to be represented by a rather small oval foramen-like emar- gination of the exoccipital. It is situated just within the quadrate plate of the squamosal, and beneath the zygomatic process. I find no stapes. If it existed, it extended outwards beneath the over- hanging margin of the squamosal, on the plane of the superior margin of the os quadratum. A. A. A. S. VOL. XIX. 27. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Cope, E. D. (Edward Drinker), 1840-1897. Philadelphia, etc.
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