74 Proceedings of the Biological Society of Washington. 



breadth over roots of canines, 7.8 (7.8, — ); postorbital constriction, 7.8 

 (8.5, 9.0); interorbital constriction, 7.6 (7.8, 8.0); mandible, 27.9 (28, 

 30.5); coronoid height, 11.2 (10.7,—); maxillary toothrow, 13.5 (13.0, 

 13.8); mandibular toothrow, 14.8 (14.6, 15.4); m 1 , 2.2x1.0 (2.6x1.4, 

 2.3x1.2); pm 4 , 1.8x0.7 (2.0x1.2, 2.0x0.9); m x , 1.9x0.8 (2.4x1.3, 

 2.1x1.1); m 3 , 0.9x0.6 (1.2x0.9, 1.2x1.0). 



Remarks. — The Philippine Eoni/cteris is readily distinguishable from 

 E. spelwa by its greater general bulk, longer forearm and tibia, deeper 

 mandibular ramus, and smaller teeth. Its relationships with the imper- 

 fectly known E. major are not so clear, but the general size appears to be 

 less (forearm of male robusta about equal to that of female major), the 

 color shows none of the peculiarities described in the Bornean species, 

 and the size of the individual teeth is noticeably reduced. 



