SPECIMEN 3207 Axis, antero-posterior length 116 mm. 124 mm. Axis, greatest width 223 mm. 248 mm. Axis, width of odontoid process 96 mm. 88 mm. Axis, length of odontoid process 48 mm. 44 mm. Cervical 3, length of centrum antero-posterior 47 mm. 45 mm. Cervical 3, width of centrum 125 mm. 145 mm. Cervical 3, height of centrum 105 mm. 100 mm. Cervical 3, width of neural canal 75 mm. Cervical 3, height of neural canal 22 mm. Cervical 4, length of centrum antero-posterior 45 mm. Cervical 4, width of centrum 132 mm. Cervical 4, height of centrum 105 mm. The humerus is flattened from front to back in a striking manner, so that, seen from the side, it looks most slender; while in reality it is a very broad bone, nearly straight, and with marked rugosities for the attachment of the muscles. We found but one specimen of the humerus, an isolated bone a little smaller than that described by Gaudry. SPECIMEN GAUDRY’S NO. 3218 SPECIMEN Humerus, total length 470 mm. 500 mm. Humerus, width at proximal end 232 mm. 232 mm. Humerus, width at middle of shaft 165 mm. 170 mm. Humerus, antero-posterior diam. of shaft 61 mm. Humerus, width across epicondyles 230 mm. 240 mm. We found neither the radius nor the ulna, but Gaudry figures both, giving the following measurements. Radius, length 245 mm. Radius, proximal diam. 127 mm. Ulna, length (calculated) 280 mm. Ulna, width of olecranon 140 mm. [Illustration: Fig. 115. _At._, atlas; _Ax._, axis; _C.3_, third cervical; _C.4_, fourth cervical—⅕ natural size; apophysis of atlas is restored after Gaudry and the neural arch of cervical 4 is restored from the opposite side.] [Illustration: Fig. 116. Axis—⅕ natural size, front view.] [Illustration: Fig. 117. Anterior face of the humerus—⅕ natural size.] For the hind limb I give some of the figures which Gaudry gives accompanying his illustrations of the hind limb.