GILMORE: the fossil turtles of the UINTA FORMATION 



151 



anterior portion of the nuclial plate. Collected by Earl Douglass and party, 

 July 30, 1908. 



Locality: South of Kennedy's Hole, and about one hundred rods west of 

 Dragon- Vernal road, Uinta Basin, Uinta County, Utah. 



Horizon: Horizon B or C, Uinta formation. Upper Eocene. 



In form the carapace of this tortoise is broad, of moderate height and strongly 

 arched in all directions. As now preserved the shell is somewhat more flattened 

 than it would have been in life. The posterior end is not so broad as in Hadrianus 

 but is more evenly rounded as in many species of Testiido. The areas covered by 

 the vertebral scutes are decidedly convex. The few anterior peripherals present 

 suggest that the front was little, if at all, emarginated on the median line. All of 

 the sutures remain distinct and the sulci can be clearly traced, so there can be no 

 question raised as to their proper interpretation in the figures. The carapace has 

 a length of about 360 mm. ; a breadth of 300 mm. 



The neurals and costals are highly differentiated. In this species there are 

 only seven neurals, as in Testudo amnion Andrews, but whether this represents a 

 constant character in this species or only an individual variation, as in T. amnion, 

 must await the discovery of additional specimens. The first neural is especially 

 elongated and oval; the second and si.\th octagonal; the third tetragonal; the fourth, 

 fifth, and seventh being hexagonal. All of the neurals are longer than wide, whereas 

 in Hadrianus, Stylemys and most of the species of Testudo the neurals are wider 

 than long. The dimensions of the neurals and costals are given in the accompany- 

 ing table. 



There are two suprapygals, the anterior being bifurcate and enclosing between 

 its right and left limbs the lozenge-shaped second suprapygal. The first has a 

 diameter antero-posteriorly at the center of 32 mm., a breadth of 88 mm.; the 

 second is 30 mm. in length and 48 mm. in width. 



The pygal is wedge-shaped, the narrower truncated end being posterior, the 

 anterior end is notched for the second suprapygal. The under side is transversely 



