ti-stuoinioa;. 



45i 



border of the pygal is drawn in, as in T . arenivaga. The length of the carapace is 450 mm.; 

 the breadth was 380 mm. 



The first and third neurals are four-sided; the second and fourth are octagonal; the fifth, 

 sixth, and seventh are hexagonal. There appear to be only 7 neurals, of which the table gives 

 the dimensions. 



The nuchal is 92 mm. long, with a maximum width of 105 mm. and a frontal width of 

 "JT, mm. All the peripherals are acute on the free border, and each presents a projecting point 

 at the end of the intermarginal sulcus. 



The costals are strongly differentiated as regards the widths of the opposite ends. The 

 table presents their widths. 



Some measurements of the pygal and the eleventh peripheral are given under the descrip- 

 tion of T . arenivaga. 



The sulci are all narrow and they run along on the summits of low ridges. The dimensions 

 of the vertebral scutes are shown above. 



The plastron has a total length of 445 mm. It is concave especially in the hinder third, a 

 condition that indicates that the individual was a male. The anterior lobe is 155 mm. long and 

 205 mm. wide at the base. This width continues forward with hardly any diminution to a 

 point in front of the hyoepiplastral suture. The border then rounds rapidly to the base of the 

 epiplastral lip. The width of the latter, at the ends of the gulo-humeral sulci, is 90 mm. The 

 lip extends forward from its base a distance of 55 mm., narrowing rather rapidly. The extrem- 

 ity is slightly damaged, so that its exact form can not be determined. The lower surface of the 

 lip curves upward strongly, like the runner of a sled. The upper surface is slightly convex 

 from side to side. The greatest thickness of the lip is about 25 mm. On the upper side the 

 thickening extends backward from the front of the lip a distance of 105 mm., thus including the 

 front end of the entoplastron. 



The length of the entoplastron is 84 mm.; the width, 88 mm. The bridge is 185 mm. wide. 



The hinder lobe is 112 mm. long and 235 mm. wide at the base. The posterior notch is 

 ^ mm. deep and 70 mm. wide. At the inguinal notch the thickness of the hypoplastron is 30 

 mm. This becomes rapidly reduced farther backward. 



The gulars overlap the entoplastron about 22 mm. The humerals occupy 80 mm. of the 

 midline; the pectorals, only 25 mm.; the abdominals, 120 mm.; the femorals, 60 mm.; the 

 anals, about 40 mm. 



This species is named in honor of Mrs. Eda Peterson, wife of the discoverer of the type 

 specimen. 



Testudo hollandi Hay. 

 Plate 84, figs. 1,2. 

 Testudo hollandi, Hay, Ann. Carnegie Mus., iv, T906 (1907), p. 18, plates v, vi. 



The type of this species belongs to Carnegie Museum, Pittsburg, and has the catalog 

 number 1 <;6i. It was discovered in the upper beds of the Loup Fork, or Nebraska beds, near 

 Running Water, Sioux County, Nebraska, by Mr. O. A. Peterson. The shell alone is preserved 

 and this is somewhat crusht downward. The carapace is broad, truncated in front, rounded 

 behind, with the free borders a little flaring over the hind limbs and a little drawn in on each 

 side of the midline behind. The region along the middle of the back is rather flat, and pre- 

 sents no traces of a keel. From the free border of the carapace in front of the axillary notch 



