PARASTRAPOTHERIUM HOLMBERGI 153 
The following measurements are taken from specimen 
No«3328: 
Scapula, greatest length 694 mm. 
Scapula, greatest width 283 mm. 
Scapula, glenoid fossa, ant.-post. diameter 130 mm. 
Scapula, glenoid fossa, transverse diameter go mm. 
Scapula, height of spine 120 mm. 
Scapula, width of enlarged margin of spine at the lower end 170 mm. 
Scapula, width of margin in middle 45 mm. 
The humerus was associated with the two scapulae 
mentioned above, and is complete. For such a large 
animal, its length is excessive, greater than that of the 
species assigned by Gaudry to P. herculeum which species 
has a skull larger than that of P. holmbergz. 
Humerus, greatest length 720 mm. 
Humerus, greatest width across proximal end 248 mm. 
Humerus, least diameter of shaft 78 mm. 
Humerus, width across the epicondyles 220 mm. 
Humerus, width of trochlea on distal end 125 mm. 
The femur which Gaudry figures as belonging to A stra- 
potherium magnum corresponds, as far as the distal end 
will admit comparison, with the one which we found in 
the Deseado beds, so that in restoring the outline of the 
missing parts, I have based it on this A. magnum. 
Femur, length (estimated) 480 mm. 
Femur, width of distal end 135 mm. 
Femur, width of trochlea 57 mm. 
Parastrapotherium ephebicum Ameghino 
P. ephebicum Amegh., 1895, Bol. Inst. Geog. Argen., t. 15, p. 639. 
P. ephebicum Amegh., 1897, Bol. Inst. Geog. Argen., t. 18, p. 449. 
P. lemoinei Amegh., 1895, Bol. Inst. Geog. Argen., t. 15, p. 640. 
P. lemoinei Amegh., 1897, Bol. Inst. Geog. Argen., t. 18, p. 450. 
Astrapotherium ephebicum Gaudry, 1904, Mem. Soc. Geol. France, t. 12, p. 15. 
Ameghino based this species on a portion of the mandible 
of an old individual with molars 1 and 2. Its chief dis- 
tinction lies in its small size as compared with P. holmbergzt. 
Gaudry assigned to this species some upper teeth. We 
