Cope.] 162 [Dec. 16, 



to below the last molar. The anterior border of the masseteric fossa is well 

 marked, but not the inferior border. The ramus is compressed and deep. 

 The canines have stout roots and narrow curved crowns. The first premo- 

 lar is separated by a short space from the canine and by a longer one from 

 the second premolar. It has either a single compressed root or two roots 

 confluent within the alveolus. The crown is truncated obliquely behind. 

 The second premolar is two-rooted and the crown is elevated anteriorly 

 and depressed posteriorly. The third premolar is more symmetrical, but 

 the heel is produced. It is narrow and keeled medially. The fourth pre- 

 molar is abruptly larger than the third. Its crown is simple, except a low 

 tubercle at the anterior base and a short trenchant heel at the posterior 

 base. Of the three tubercular-sectorials the first is the smaller. The heels 

 of all three are rather narrowed and elongate. Their margin is raised all 

 round, inclosing a basin ; a notch in the external margin cuts its anterior 

 part into a tubercle. The two internal tubercles are rather obtuse, and are 

 considerably shorter than the external cusp. 



Measurements. ' M. 



Length from canine to end of last molar 060 



first true molar 087 



" " " second premolar 015 



" of base of fourth premolar .009 



Elevation of fourth premolar 007 



Length of base of second true molar 007 



heel " " " 006 



Elevation of second true molar 009 



Depth of ramus at third premolar 015 



Length of superior canine 028 



" crown of superior canine with enamel 013 



A portion of the frontal bone shows weak anterior temporal ridges 

 uniting early into a sagittal crest, which is low as far as preserved. The 

 parietal bones overlap the frontal as far forwards as the temporal ridges. 

 Anterior to the latter the front .is concave in transverse section. Viewed 

 from below, the spaces for the olfectory lobes are large and entirely an- 

 terior'to those which received the anterior lobes of the hemispheres ; each 

 one is about as wide as long. In the small part of the cerebral chamber 

 wall left, there is no indication of convolutions, which would be visible in 

 a gyrencephalous brain ; two air-chambers in front of each olfactor}^ lobe. 

 The base of the transverse process of the atlas is perforated from be- 

 hind to the middle of its inferior side ; from the latter opening a foramen 

 penetrates directly into the neural canal. A posterior dorsal vertebra has 

 tlie centrum longer than wide and much depressed. Its interior fixce is 

 regularly convex in section. Tlie proximal end of the scapula shows that 

 its inner border is much thickened, and that the spine arises abruptly and 

 near to the glenoid cavity. There api)ears to have been scarcely any cora- 

 coid ; the surface adjoining it is, however, injured. The humerus lacks 



