450 FOSSIL TURTLES OF NORTH AMERICA. 
15 mm. in width on the hinder lobe, and 30 mm. at the junction of hyoplastra and hypo- 
plastra. The width on the entoplastron can not be determined, but it has caused the latter to 
break along the midline. The gular sulci are not distinct, but they appear to have been broad, 
and they extended on the entoplastron. The humero-pectoral sulcus starts, narrow and well 
imprest, at the axillary notch, runs backward and inward nearly 75 mm., then turns sharply 
and runs directly across the plastron, passing behind the entoplastron. The sulcus between 
the pectorals and the abdominals is convex forwards. Laterally the pectorals have a width 
of only 45 mm., but at the midline they are 75 mm. wide. The abdominals have a width of 
175 mm. along the midline. The sulcus between these and the femorals is wide and deep, 
and it runs directly across the plastron in front of the inguinal notches. The femorals extend 
80 mm. along midline. The anal scutes meet along the midline fora distance of about 50 mm. 
The inner half of the lower surface of each hypoplastron is markt by longitudinal grooves. 
The remains of the carapace (figs. 611, 612, 613) of this species testify that it is a true 
Testudo. One of the neurals (fig. 611) is octagonal, and the few costals present show that some 
/ 
Fics. 610 AND 611.—Testudo cam pester. No. 3939 A. M.N. H. 
610. Plastron. 4%. Partly restored in front. 
611. Portion of anterior half of carapace. ><}. Most of nuchal and whole of first neural restored. 
were broad at the proximal end and narrow distally, while others were narrow proximally and 
wide distally. 
The large octagonal neural is the second in the series. Its fore-and-aft diameter along the 
midline is 67 mm.; its width across the middle of the length is 86 mm. The sides are concave, 
the angles truncated. The third costal articulated with the right hinder angle of the second 
neural. Its greatest width is 87 mm.; its distal width was about 50 mm.; its length about 
240 mm. The second vertebral scute was about 160 mm. wide from side to side. 
There is present the upper end of another costal plate, probably the fourth on the nght 
side. The upper end is 48 mm. wide; the lower end of the fragment, perhaps a third of the 
costal, is 75 mm. wide. 
The proximal portion of the right first costal is among the remains. Its proximal end is 
100 mm. wide and most of this is concave and was in contact with the first neural. The latter 
must therefore have had convex sides. On the outer half of the upper surface of the first costal, 
are several deep, wide, and curved grooves, which mark the stages of growth of the scute 
which covered it. Similar grooves are found on other costals. The costals are about 13 mm. 
in thickness. 
