TESTUDINID&. 417 
lation of the pubis with the ischium, near the midline, to the anterior tip of the pubis is 39 mm. 
The lateral pubic processes are stout, and appear to have been directed less strongly outward 
than in any of the species of Testudo named above. Where it forms the anterior boundary of 
the ischio-pubic foramen, the pubic bone is beveled off above, being in this respect like that of 
Gopherus polyphemus. 
The femur (figs. 546, 547) is strictly like that of Testudo, since the greater and the lesser 
trochanters are united by a high ridge. This converts the fossa which lies between the tro- 
chanters of the Emydide i into a pit. So far as the materials at hand indicate, this pit is much 
deeper in T. vaga than in Stylemys nebrascensis. The two trochanters rise to the same level, 
not quite to that of the head of the femur. On the distal end of the bone, a sharply defined 
ridge separates the condylar surface for the tibia from that of the fibula, a condition that the 
writer has not observed in Testudo. In Stylemys nebrascensis this ridge is still better 
developt. 
The scantiness of the materials from which Leidy’s Testudo niobrarensts is known makes 
it dificult to distinguish it with certainty from the species here described. Since the two belong 
apparently to very Saificnent levels the probability is great that they are not identical. The lip 
of Leidy’s species appears to project further beyond the general outline of the anterior lobe 
and the length of that part of the gulo-humeral scute that lies on the upper side of the epi- 
plastral is shorter than in 7. vaga, one-fourth the width of the base of the lip instead of one- 
third. From the younger specimens of 7. oshorniana it differs in the great antero-posterior 
extent of the pectoral scutes and in the strong differentiation of the costal bones. 
Testudo inusitata Hay. 
Plate 68, figs. 1, 2. 
Testudo tnusitata, Hay, Ann. Carnegie Mus., tv, 1906 (1907), p. 18, plates in, iv. 
This name is applied to a specimen which was collected by Mr. Earl Douglass, near 
Canyon Ferry, Broadwater County, Montana. The horizon is regarded as being that of the 
Deep River. The specimen is a shell, the right side of which is missing. The catalog number 
is 311. 
The shell is convex above. The outline in front and behind is rounded. The peripherals 
flare slightly over the limbs. The pygal is missing. The length of the carapace is 265 mm.; 
the width is 200 mm. The nuchal is 60 mm. long, 47 mm. wide in front, 65 mm. where widest. 
The first neural seems to have been 4-sided. The second to the sixth are hexagonal. The 
dimensions are given in the accompanying table. 
Dimensions of neurals. Dimensions of costal bones. Dimensions of costal scutes. 
Proximal Distal 
No. Length. Width. No. No. Length. Width. 
width. width. 
1 35 26 2 29 38 1 45 71 
2 26 35 3 29 18 2 50 75 
3 27 37 4 v2 34 3 57 78 
4 25 37 5 29 20 4 By es 
5 26 37 | 6 19 33 5 50 75 
6 28 36 7 17 17 
7 24 22 t 16 32 
The costal plates are alternately wider and narrower proximally and narrower and wider 
distally. Their dimensions are shown in the middle table above. 
The peripherals over the bridges are high, rising about 65 mm. above the level of the 
plastron. The free borders of those in front and those ‘behind the bridges are acute. 
The vertebral scutes are considerably wider than long. The preral borders are not greatly 
angulated. The approximate measurements are shown above in tabular form. 
The plastron has a length of 245 mm. The anterior lobe is 80 mm. wide and mm. 
wide at the base. The epiplastral lip projects 25 mm. beyond the ends of the gulo- een 
27 
