104 
TEETIAEY VEETEBEATA OF THE FATCtM. 
Tho humerus, ulna, and tibia enumerated below, together with some small astragali similar to that 
described above (p. 1-19) and figured in text-fig. 52, probably belong to this species or to P. minor. 
C. 8881. Right humerus with its upper part much crushed (text-fig. 50). This specimen differs 
more from the humerus of the later Proboscideans than does the humerus of P. headnelli 
described above. The large rounded head {h.) is abruptly truncated on the inner side by 
the flat inner face of the upper part of the shaft. Anteriorly it bears a small “ lesser ” 
Text-fig. 56. 
Eight humerus of Palaomastodon {‘1) i^arvus : A, from front ; B, from inner side. 
If.g., bicipital groove ; c./., coronoid fossa ; d., deltoid crest ; g.t., greater tuberosity ; /t., Iiead ; hr., inner 
condyle ; hi., lesser tuberosity ; o.c., outer condyle ; s.r., supinator ridge ; tr.i., inner part of trochlea ; 
ir.o., outer part of trochlea. 5 nat. size. 
tuberosity (/.h), which is separated by a deeply concave bici])ital groove (5.y.) from 
the greater tuberosity (ff-t.), which is very large and rises considerably above the head ; 
from it a ridge forming tho outer edge of the bicipital groove runs down tho anterior 
face of the upper third of the shaft. It is diflicult to determine the exact form of 
the upper portion of the shaft owing to the crushing it has undergone, but it can be 
