TESTUDINID-*. 



399 



Dimensions "I neurals. 



No. 



Length. 



Width. 



Dimensions of costal bones. 



No. 



Width of Width of 

 upper end. lower end. 



1 he nuchal has probably a width <>t about 125 mm. along the front holder, but here the 

 sutures are indeterminable. The greatest width is 175 mm. and the length along the midline 

 1 50 mm. 1 he first neural is oval; the second and the fourth octagonal; the third, hexagonal. 



The fifth was probably hexagonal, but 

 a considerable portion of it appears to 

 have been crusht down beneath the 

 fourth. The sixth, seventh, and eighth 

 are approximately hexagonal. The 

 table gives the dimensions of the 

 neurals. 



The anterior supra pygal is bifur- 

 cate, having a total height of about 87 

 mm., and inclosing between its right 

 and left limbs the second suprapygal. 

 The latter has a height of 84 mm. on 

 the midline and a breadth of 125 mm. 

 The costals are alternately wider and narrower at their upper ends and vice versa at their 

 lower, but the amount of the differentiation is not great. Omitting the first the dimensions 

 are given in the table above. 



504. 505. 



FlGS. 504 and 505. Testudo brontops. Carapace and plastron of type. X). 

 504. Carapace. 505. Plastron. 



The upper ends of the third costals have been somewhat injured by crushing. The 

 proximal ends of the fifth costals also have been damaged so that their exact width is uncertain. 

 On the right side the greater portion of the fifth costal has been pushed down out of sight. 



The second peripheral occupies about 150 mm. of the free border, and extends backward 

 no mm. It is nearly flat above, concave beneath, and attains a thickness of 37 mm. The 



