NO. 15 



SMITHSONIAN EXPLORATIONS, I92I 



27 



" Other material obtained here consists of remains representing a 

 wide variety of species which inchide a large and a smaller species 

 of camel, the latter apparently closely related to the South American 

 guanaco ; two or three species of horses, a species of deer ; a small 

 extinct antelope of the Mcrycodus type; a carnivore related to the 

 dog-wolf group but more primitive in some respects than any of the 

 living forms ; several new species of the rodent group, but all belong- 



FiG. 28. — Portion of the carapace or bony skin covering of a Glyptodon, parti- 

 ally excavated. Curtis Ranch locality. (Photograph by Gidley.) 



ing to modern genera ; two species of land turtles, and a species of 

 bird not yet determined. 



" At the close of this work, which had nearly exhausted the original 

 allotment for field expenses, an additional sum was granted, whereby 

 it was possible to proceed with a desired investigation planned for 

 earlier, in the Sulphur Springs \'alley near W'illcox. 



" I arrived at Willcox on the 15th of March. As found on a previous 

 visit the conditions were not such as would inspire enthusiasm over 

 the prospects of a good collecting-field. The surrounding country 

 stretched away for miles in every direction almost as level as a floor, 

 with no erosional exposures ; and had not recent fossil remains already 



