164 
TEJITIAEY VEETEBRATA OF THE FATCM. 
The liumerus, ulna, and tibia enumerated below, together with some small astragali similar to that 
described above (p. 149) and figured in text-fig. 52, probably belong to this species or to P. minor. 
C. 8881. iliglit humerus with its upper part much crushed (text-fig. 5G). This specimen differs 
more from the humerus of the later Proboscideans than does the humerus of P. bcadnelli 
described above. The large rounded head (/i.) 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 {"i) parvus : A, from front; B, from inner side. 
h.g., bicipital groove ; c.f., coronoid fossa ; d., deltoid crest ; rj.t., greater tuberosity ; /<., head ; hr., inner 
condyle ; l.t., lesser tuberosity ; o.c., outer condyle ; s.r., supinator ridge ; tr.i., inner part of trochlea ; 
tr.o., outer part of trochlea. 5 nat. size. 
tuberosity (/.<.), which is soparateil by a deeply concave bicipital groove (A.y.) from 
the greater tuberosity (y.h), which is vei-y large and rises considerably above the head ; 
from it a ridge forming the outer edge of the bicipital groove runs down the anterior 
face of the upper third of tho shaft. It is dillicult to determine the exact form of 
the upper portion of the shaft owing to the crushing it has undergone, but it can be 
