TESTUDINIDA. 403 
the right side have been thrust forward about 10 mm. in front of those on the left. Some por- 
tions of neurals, costals, and peripherals are missing, especially on the right side, but all parts 
are represented on one side or the other. The outer ends of the hyoplastra are wanting and 
part of the outer end of the left hypoplastron. ; 
The species was a broad and rather deprest one, and in many respects it resembled the recent 
Gopherus polyphemus. The following table presents some of the dimensions. When Cope’s 
measurements differ they are added in parentheses. 
Length of carapace ... 420 (408) Width of anterior lobe......... uses: 200 
Width of carapace..... 356 Greatest length of posterior lobe 120 
Greatest length of plastron 440 Width of base of posterior lobe ..+ 210 (200) 
Length of anterior lobe 132 
The anterior border of the carapace (plate 67, hg. 1; text-fig. 509) is truncate; the pos- 
terior border between truncate and rounded. The free edge is everywhere acute. Where the 
509. Sa ee 
4 
| eer ee 
i 
Fics. 509 AND 510.—Testudo laticunea. Carapace and plastron of type. 4. 
50g. Carapace. 510. Plastron. 
sulci between the marginal scutes cross the free border there is present a tooth or mucro. The 
height of the bridge peripherals was about 85 mm.; while the extent of the corresponding 
costals, transverse to the animal, was about 145 mm. The greatest thickness of the first periph- 
eralis 18 mm. The nuchal bone occupies 62 mm. of the free border, and its greatest width is 
g5 mm. The hinder peripherals have a slight flare. The eighth has a height of 70 mm. anda 
thickness of 22 mm. The pygal has a length of 34 mm. along the midline, a transverse extent 
of 57 mm. at the upper border, and of 45 mm. along the free border. The first suprapygal is 
bifurcate and comes into contact with the eleventh peripheral of each side, but not with the 
pygal. The second pygal is broader than long. 
The neurals have not attained so. high a degree of differentiation of form as they have in 
most of the species of the genus. None of the series:is octagonal. All are hexagonal, except 
