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[108] 



Merycoidodon CulbertoOXI!, Leidy: ih. iv, 47. Closely allied to 

 Oreodon priscum and about the same size, based upon a iragment of the 

 lower jaw containing the true molares, and a fragment of the upper jaw 

 with the posterior two molares. 



EncROTAPHU.s Jacksoni, Leidy : ib. 92. Founded upon the posterior 

 portion of a cranium about the size of that ot Oreodon priscum, but differ- 

 ing from it in a remarkable degree in the very large size of the squamous 

 portion of the temporal bones. 



The species is named in honor of Dr. Samuel Jackson, Professor of the 

 Institute of Medicine in the University of Pennsylvania. 



AGRiocH.a::Rus antiquus, Lcidy : ib. 121. Established upon a large 

 portion of the face and inferior maxilla ; containing nearly all the molares, 

 and four superior and two inferior molares of a second individual. 



The remaining new genus is a carnivorous animal, closely allied to the 

 existing genus Ursus. It is characterized from fragments of three teeth, 

 under the name of Autodon. Pro. Acad. Nat. Sciences, vol. v., p. 278. 

 The species may be named Autodon vetustum, Leidy. 



The Chelonian remains consist of three species of the genera Tesiudo and 

 Emys. 



1. Testudo lata, Lcidy : Pro. Acad. Nat. Sciences, vol. v., p. 173. A 

 large species, founded upon a specimen consisting of a great portion of the 

 carapace and sternum, broken into two pieces. In its perfect condition, its 

 length has been about tvvo feet, and its breadth about tv/cnty inches. 



1. Emys iieisiispherica, Lcidy : Pro. Acad. Nat. Sciences, vol. v., p. 173. 

 Established upon a specimen consisting of about one-third of the carapace 

 and four-fifths of the sternum-. When perfect, it has been about nine and a 

 half inches in length, and seven and a half in breadth. 



2. Emys nebrascensis, /,e/*rfy : ib. 172. Stylem\''s necrascensis, i6. 

 172. A species established upon the greater ])ortions of two individuals. 

 In the entire condition, it has been about seven inches long, and five and 

 three-fourths broad. 



JOSEPH LEIDY. 

 Mis.— 3 



