622 EDWARD PHELPS ALLIS, JR. 
the columella auris of amphibians, which is generally consid- 
ered to represent the hyomandibula, indicate that the dipneus- 
tean and crossopterygean types of hyomandibula are each rep- 
resented in these animals, and that there is still another type 
which corresponds to the posterior articular head, alone, of the 
teleostean hyomandibula. 
Palais de Carnolés, Menton, France 
May 15, 1914 
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