ry 
252 MEMOIRS OF THE CARNEGIE MUSEUM 
before the suprascapular border is reached, and the acromion process on the spine is 
well developed, while the postscapular fossa is unequally divided by the prominent 
and sharp glenoid border, identically as in the bears. In the fox the scapula has a 
small area developed for the teres major muscle at the superior portion of the glenoid 
border, but it is quite small in comparison with that in the present genus, in which 
the scapula as a whole is proportionally broader transversely. The spine is high 
and terminates in an overhanging acromion, which, however, does not project 
below the glenoid cavity. Judging from the heavy acromion process there was 
undoubtedly a clavicle of perhaps considerable development. The glenoid cavity 
is not so large proportionally as in the large cats, and in this respect is rather more 
like that in Canis. The coracoid process also has about the same proportionate 
development as in Canis and is relatively much shorter than in the tiger. 
Professor Scott states (/. ¢., p. 381) that in Cynodictis “the coracoid process is 
” 
unusually large . that the “prominent acromion descends below the level of 
the glenoid cavity . . .” and that in general character the scapula “is rather viver- 
ine or raccoon-like than canine,” which is not true of the scapula in Daphanodon. 
In Temnocyon ferox, according to Eyerman’s description " “ the greatest vertical 
length [of the scapula] is from the coracoid to the posterior upper edge and not 
along the spine, as in C. familiaris. This is not the case in the present genus, nor 
is the spine “ falling short of the supra-scapular border,” as in the John Day genus, 
but in this respect it is more nearly like the dogs. 
It is interesting to note that the area for the teres major muscle on the upper 
part of the glenoid border of the scapula in Hoplophoneus is also quite large, and is 
quite similar to that in Daphenodon. 
MEASUREMENTS OF SCAPULA. 
Greatest height from glenoid cavity to suprascapular border. 
Greatest antero-posterior diameter. 
Antero-posterior diameter of glenoid cavity, including the coracoid process 
Transverse diameter of glenoid cavity 
Humerus (Plate LX XIX).—The humerus has apparently changed very little in 
its general characters from that of the Eocene forms. The slight shortening of the 
bone and the less developed supinator ridge, together with the somewhat greater 
development of the internal epicondyle in the present form are, the only noteworthy 
differences from those in the Oligocene genus Daphanus. The tendency to a 
reduction of the supinator ridge in Daphenodon is a distinct step from the early 
Eyerman, J. The American Geologist, Vol. XVII, p. 274, 1896. 
