The hind limbs are represented by the two femora and the upper portion of the tibia. The femur is almost as elongate as the humerus and is more slender. It is not so much expanded as the humerus. Its ends appear to have been cartilaginous and do not represent the well-formed articular surfaces preserved in the T. minimus. The upper part of the tibia is preserved, and appears to have been truncate.

If this species belongs with Tuditanus it is of interest in that the ventral chevrons are present. The species is particularly characterized by the elongate limbs.

Measurements of the Type of Tuditanus longipes Cope.

mm.
Length of vertebral column between pelvis and end of humerus 7
Length of vertebral column anterior to humerus18
Length of caudals present42
Length of humerus19
Width of humerus 2
Length of radius and ulna12
Length of a vertebra 3
Length of ilium 7
Length of femur, estimated18
7 chevrons in 4 mm.

Tuditanus minimus Moodie.

Moodie, Jour. Geol., XVII, No. 1, p. 56, fig. 10, 1909.

Moodie, Proc. U. S. Nat. Mus., 37, p. 23, pl. 8, fig. 2, 1909.

Type: Specimen No. 4555, U. S. National Museum.

Horizon and locality: Cannelton slates of Pennsylvania (Upper Freeport).

The species is represented by a nearly complete skeleton preserved on a slab of slate from the Cannelton shales of Pennsylvania. The obverse slab has been lost, which is very unfortunate, since there is no doubt that the entire skeleton was originally present. The species is placed in the genus Tuditanus on account of the close resemblance to the type form T. punctulatus Cope, although it is much smaller than that species.

The type specimen of the species did not attain a length of more than 3.5 inches. Its form is very lizard-like, but its structure is typically amphibian. The form of the skull is especially similar to that of the type species T. punctulatus, which it resembles in the narrow posterior truncation of the skull, as well as in the anterior position of the orbits.