The neck does not appear to be preserved. In the back the vertebræ are about 3/10 inch long, so that twelve, which is the usual number, would only occupy a length of a little more than 3-1/2 inches. The tail is elongated like that of Dimorphodon, and bordered in the same way by ossified ligaments. There are thirty-five tail vertebræ. Those which immediately follow the pelvis are short, like the vertebræ of the back. But they soon elongate, and reach a maximum length of nearly 1-1/2 inches at the eighth, and then gradually diminish till the last scarcely exceeds 1/8 inch in length. The length of the tail is about 22 inches; this appears to be an inch or two longer than in Dimorphodon. The longest rib measures 2-1/2 inches, and the shortest 2 inches. These ribs probably were connected with the sternum, which is imperfectly preserved. [Illustration: FIG. 54. DIMORPHODON MACRONYX SHOWING THE MAXIMUM SPREAD OF THE WING MEMBRANES] The bones of the limbs have about the same length as those of Dimorphodon, so far as they can be compared, except that the ulna and radius are shorter. The wing metacarpal is of about the same length, but the first phalange of the wing finger measures 6-1/4 inches, the second is about 8-1/4 inches, the third 6-1/2 inches, and the fourth 4-3/4 inches; so that the total length of the wing finger was about half an inch short of 2 feet. One character especially deserves attention in the apparent successive elongation of the first three phalanges in the wing finger in Dimorphodon. The third phalange is the longest in the only specimen in which the finger bones are all preserved. Usually the first phalange is much longer than the second, so that it is a further point of interest to find that this German type shares with Dimorphodon a character of the wing finger which distinguishes both from some members of the group by its short first phalange. [Illustration: FIG. 55. THE LEFT SIDE OF THE PELVIS OF DIMORPHODON SHOWING THE TWO PREPUBIC BONES]