MOODIE: PERMIAN ANPHIBIA. 253 



the shape and structure of the scapula-coracoid, as well as 

 other structures which are characteristic. 



The material on which the species Eryops willistoni is based 

 is from the Permian of Oklahoma. It was collected by Prof. 

 C. N. Gould in 1896, in the red sandstone southwest of Black- 

 well, Okla. The specimen is No. 348 of the Kansas University 

 Museum. 



I am indebted to Mr. G. Dallas Hanna for all of the draw- 

 ings illustrating the present essay, except that on plate XLIX 

 figure 1, which is from the pen of Mr. Sydney Prentice, at 

 present with the Carnegie Museum. 



3-Univ. Sci. Bull.. Vol. V, No. 13. 



