524 MOODIE. [VoLt. XIX. 
nection as has been stated above. ‘The supraorbital crosses 
the frontal, prefontal and a part of the nasal. The squamosal 
element in Tuditanus tabulatus Cope is peculiar in that it is 
excluded from the parietal by the extension of the epiotic and 
postorbital. This condition is found in several other species 
of the Microsauria. It will be noticed that with the changed 
condition of the position of the squamosal, the temporal canal 
has changed also and this is further proof of the close connec- 
tion between the cranial elements and the lateral line canals. 
Fic. 11.—The cranium of Eryops megacephalus Cope with the cranial 
elements and the associated lateral line canals. Modified after Branson. 
One-ninth natural size. 
Among the Temnospondylia the lateral line canals are well- 
developed on some of the skulls, such as Cricotus, Eryops, and 
Archegosaurus. I have had the opportunity of studying only 
one of these forms, that of Eryops megacephalus Cope (Fig. 
11), from the Permian of Texas, represented by an almost per- 
fect skull in the collection of the University of Chicago. This 
skull presents very striking characters as to the lateral line 
canals. The entire surface of the cranial elements in Eryops 
as in other of the Stegocephala is covered with coarse pits. 
The fossze are present even in the bottoms of the grooves 
