53 



Measurements. 



M. 



Length of femur , , . . . . • 430 



Estimated length of tibia (from two specimens) ' 560 



Anteroposterior diameter of shaft of femur at mid-length 04:5 



Circumference of shaft of tibia at mid-length (of another individual) '112 



Transverse diameter of same tibia above distal end '041 



Width of cavity, in same direction, where preceding measurement was taken . . • 030 



Length of metatarsal IV • 335 



Length of metatarsal V (nonfunctional, imperfect at proximal end) -100 



Length of digit II , ., , 164 



Length of digit III , -213 



Length of digit I V , -143 



The tooth represented in figs. 12 and 13 of plate XIV is provisionally associated with this 

 species and is regarded as being from the anterior portion of the jaw. A similar tooth, 

 figured by Leidy, in his memoir on the Judith river vercebrata (Trans. Amer. Philos. 

 Soc. 1859) is referred to in his description of the teeth of Deinodon horridus as an aber- 

 rantly formed specimen. Leidy suspected the tooth to be an incisor. 



In the tooth figured on plate XIV, one only of the posterior keels is denticulated 

 and that only for a short distance at the centre of its length ; the other is smooth. 

 Another specimen is apparently without denticulations. 



A number of teeth of this shape, with others intermediate in form between them 

 and the orthodox Megahsauroid tooth, were collected in the Eed Deer river district. They 

 are referred to the present species on account of their frequent occurrence with and near 

 the remains of O. alius. 



The estimated length of Ornithomimus alius is 22 feet. 



Belly Eiver series, Eed Deer river, 189*7, 1898 and 1901. The right hind limb with 

 the phalanges of the left foot, were found in 1901, below Berry creek. 



The following remains of this species besides those already mentioned have been 

 collected ; by Professor John Macoun, in 1880, on Mackay creek, near Walsh on the line 

 of the C.P.E., phalanx of pes (Belly Eiver series) ; by Mr. T. C. Weston, in 1884, at Eoss 

 coulee, near Irvine, about eighteen miles east of Medicine Hat, part of a caudal vertebra, 

 phalanges of the pes and a phalanx of the manus (Belly Eiver series) ; by Mr. Weston, 

 in 1889, part of a caudal vertebra and phalanges of pes, labelled, Eed Deer river, range 

 xxi, tp. 32 west of 4th P.M. (Edmonton series). 



STEGOSAUEIDJE. 



Pal^oscincus, Leidy. 



Pal^oscinous costatus, Leidy. 



PakeoscincHs costatus, Leidy. 1857. Proc. Acad. Nat. Sci. Philadel., vol. viii, p. 72, and 1S60, 

 Trans. Amer. Philos. Soc. Extinct Vertebrata from the Judith river and Great Lignite formations of 

 Nebraska, p. 146, pi. 9, figs. 49-52. 



