922 THE JOHN DAY FAUNA. 



long strip of frontal bone with nasomaxillary sutures. The nasal bones 

 terminate in a gradual acumination above the anterior border of the orbit. 

 The frontal -parietal crosses the sagittal crest two-fifths the distance to the 

 inion from the postorbital processes. The infraorbital foramen opens above 

 the posterior border of the thii'd superior premolar. The postglenoid is at 

 the bottom of a groove of the postglenoid process The condyloid foramen is 

 near the / lacerum posterius, and just anterior to the anterior border of the 

 large precondylar fossa. The foramen magnum is a little wider than deep, 

 and has its superior border regularly arched, and without notches or angles. 



Dentition. — The superior incisors differ from those of Galecynus gregarius 

 and some other species, in having their cutting edges interrupted by two 

 notches, excepting in the external teeth, where there is but one notch, and 

 that on the inner side. The notches are wanting or indistinct on the 

 inferior incisors. The canines are slender like those of the red fox, but 

 are more curved. The enamel of the inferior canine is longitudinally 

 wrinkled, as in the fisher ; the wrinkling is less distinct on the superior 

 tooth. The superior premolars are separated from each other and from 

 the sectorial by short spaces. Only the third has a posterior marginal 

 lobe. The sectorial is relatively shorter than in the G. gregarius; its length 

 is less than that of the inferior sectorial by the length of the anterior lobe 

 of the latter. Its inner lobe is smaller than usual. Both tubercular molars 

 have well-developed external cusps, a valley, and in place of the V-shaped 

 crest, two rather prominent juxtaposed subacute tubercles, much as in the 

 first tubercular of the coyote. Within these is a well-defined valley bounded 

 by a prominent internal ledge. There is a complete external cingulum on 

 the first tubercular; it is incomplete behind on the second tubercular. There 

 is no external cingulum on the sectorial or the other premolars. 



The inferior premolars are not so widely spaced as the superior ; the 

 third and fourth have well-defined posterior marginal lobes, and small an- 

 terior basal tubercles. The inferior sectorials only display thin external 

 faces in the specimen. They have a good deal the form of those of the 

 Amphicgon cuspigerus, and probably have wide heels. The first tuberculars 

 are quite robust. The enamel on all the molars has a tendency to wrinkling ; 

 and this is most distinct on the inferior sectorial and tuberculars. No exter- 

 nal cingula on inferior molars. 



