Fig. 106. Right humerus,
posterior aspect—
⅕ natural size.
Fig. 107. Left femur,
posterior side—
⅕ natural size;
outline of upper
portion after Gaudry from
Astrapotherium magnum.
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 | 90 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. holmbergi.
| 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 Astrapotherium 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. |