340 



B,. & Lull — Pleistocene Ground Sloth 



the left jugal, two portions of the right mandibular ramus, and 

 the symphysis of the jaw, all of which because of size agree- 

 ment have been referred to one specimen, No. 10264. 



Of 10265, we possess two halves of the occiput lacking the 

 basi-occipital element, the right squamosal with periotic, a por- 

 tion of the right mandible, and the left side of the symphysis. 

 No. 10266 represents a larger individual, of which only the 



Fig. 1. 



Fig. 1. Skull and jaw of Mylodon harlani. Shaded portion indicates 

 the parts preserved in the Eock Creek, Texas, quarry. Drawn from skull 

 No. 10205, Yale collection, from Rancho La Brea. One-fifth nat. size. 

 cf, anterior condyloid foramen; jug. f, jugular foramen. 



right squamosal, right periotic, and right exoccipital, with a 

 nearly complete condyle, are preserved. Of 10267, the smallest 

 animal, there is only a portion of the right ramus. In addi- 

 tion, several teeth are present, mainly inferior molars, and 

 probably referable to No. 10264. There are also several skull 

 fragments, and two more periotic bones, which I can not 

 surely identify. 



