1895.] Geology and Paleontology. 999 
of two of my papers (Bemerkungen über die Osteologie der Schlifenge- 
gend der héheren Wirbelthiere Anat. Anz. x, 1894, pp. 315-330 and: 
On the Morphology of the Skull in the Mosasauridex, Journ. Morphol. 
VII, 1892, pp. 1-22, pl. I-II), to which I should like to make some re- 
marks. 
1. The Parocecipital. 
The bones of the temporal region in question I have termed squam- 
osal, prosquamosal and quadratojugal. Cope states that I adopted the 
name prosquamosal (Owen, 1860), because the name supratemporal was 
used previously for a differentelement peculiar tothe Teleostomous fishes. 
But this was not the only reason; the principal reason was, that with 
the name supratemporal, totally different elements were designated in 
the Stegocephalia and Ichthyosauria and in the Lacertilia (Anat. Anz. 
x, 1894, p. 320.) 
Cope has called the three bones, the paroccipital, supratemporal and 
zygomatic, “after earlier authors” as he says. But the paroccipital is 
not the squamosal, the name supratemporal is misleading as stated 
before; and the name zygomatic has been used since the beginning of 
Anatomy, for the jugal or malar; how can Prof. Cope use this name 
for the quadrato-jugal? I thought I had shown once for all, that the 
opinion held by Prof. Cope, that the squamosal of the Squamata is 
homologuous to the paroccipital (opisthotic) is wrong. But it seems, 
that he is not convinced. He is, however, the only one among all liv- 
ing morphologists who has this opinion. 
He believes that the exoccipital together with the paroccipital pro- 
cess in the Reptilia in which there is no free paroccipital (Ichthyosauria, 
Testudinata) represents the exoccipital alone. He states that nobody 
has ever found the paroccipital process as a separate ossification. But 
he is wrong about this: The free paroccipital, uniting later with the 
exoccipital and forming the paroccipital process has been first described, 
as far back as 1839, by Rathke’; in Tropidonotus natrix and this pass- 
age has been translated by Huxley in his well known Croonian lecture 
on the Theory ofthe Vertebrate Skull, delivered the 18st of November, 
1858 before the Royal Society. It was also described by Leydig’ in 
Anguis fragilis, in 1872. 
1Rathke, Heinrich Entwicklungsgeschichte der Natter. Königsberg, 1839, 
pp- 201-202. y 
2 Leydig Franz. Diein Deutschland lebenden Arten der Saurier. Tübingen, 
1872, p. 26. 
