MOODIE: MAZON CREEK, ILL., SHALES. 339 
(Journ. Geol., xvii, No.7). These are not, however, to be cor- 
related with the three foramina above mentioned, since in the 
Temnospondylia the foramina belong with the coracoid and 
not with the scapula. The condition of the Temnospondylia 
occurs in the bony fishes, Xiphactinus audax Leidy; and an 
analogous condition obtains in the reptiles, as in the mosasaurs 
and dinosaurs, where the separate coracoid is pierced by fo- 
ramina. Doctor Williston informs me that the foramina are 
also found among the Cotylosauria, where the condition is not 
far different from what it is in Eryops. 
Near the outer end of the right scapula there is a large 
fragment preserved which, I think, must be the misplaced 
clavicle. It is obscurely triangular, or, more exactly, spatu- 
late. The interclavicle is represented by fragments only. It 
seems to have had a narrow form. 
The humeri recall those of Micrerpeton. They are somewhat 
elongate and apparently cylindrical in their normal condition, 
though somewhat flattened in the fossil. The shaft is con- 
siderably constricted at the middle, and the ends are ex- 
panded, in which expansion the lower end exceeds. The ends 
are abruptly truncate, indicating a small amount of en- 
dochondral ossification or its entire absence. 
The mesopodial elements, unlike what has been described 
for Cephalerpeton, are quite dissimilar in form, recalling the 
condition in Mesosaurus brasiliensis McGregor. The larger 
element I take to be the ulna. It has the lower end greatly 
expanded and the shaft is curved outward. It resembles very 
much a reptilian ulna. 
The radius is much smaller than the ulna, lacks the lower 
expansion, and is shorter by one millimeter. Its ends are 
abruptly truncate. 
The carpus is represented merely by a blank space. There 
are no evidences of impressions of cartilage in the sandstone. 
The hand of the left side contains four digits. There 
are two phalanges preserved in the first digit, including the 
sharp-pointed terminal phalanx. The second digit has only 
the metacarpal. The third has the metacarpal and the first 
phalanx, which does not differ in form, but only in size, from 
the metacarpal. The fourth digit contains only the meta- 
carpal. No definite evidence of more than four digits has ever 
been given for the hand of the Branchiosauria. Of the right 
hand there are portions of three digits preserved, including 
