THE TRUE CORACOID. 



237 



post-Triassic reptiles universally known as the coracoid is 

 entitled to retain that designation, as being the honiologue of the 

 human coracoid process and its equivalent the true coracoid of the 

 monotremes and mammal-like reptiles ; and the more extensive 

 change of nomenclature advocated in my original article thereby 

 avoided. 



Text figure 2. 



The right side of the shoulder-girdle of a Mammal-like Reptile {Dimetrodon). 

 8c, scapula ; Cor., coracoid ; Mcor., metacoracoid. (From Williston.) 



Proc. Zool. Soc.— 1915, No. XVII. 



17 



