SCIENTIFIC EXPEDITION TO NORTHWESTERN COLORADO 1 43 



Bergtold states that in the summer of 1894 they were numerous in California Park 

 and on the flats north of Craig, but scarce there now. 



Ovis canadensis Shaw, Mountain Sheep 



Reported in this area only on Devil's Causeway. Said to be increasing owing 

 to protective laws and difficulty of capture. 



Bison bison Linn., Bison, "Buffalo" 



Dr. Bergtold states that in 1894 he found their bones abundant from Rifle Creek 

 to Bear's Ears Mountain. The last survivors in our state of these animals which 

 once roamed in thousands inhabited the Lost Park district. They were known as 

 the "Lost Park Herd." Mr. Ball writes "Last one known at Cedar Springs in 

 1884, killed by Utes." 



Sciurus fremonti Aud. and Bach., Pine Squirrel 



Common at Newcasde and in the spruce regions of the North Fork basin. Doubt- 

 less in all the spruce regions traversed. 



Eutamias minimus consobrinus Allen, Related Chipmunk 



Specimens taken at Meeker and Marvine Lodge. Very likely a majority of 

 "little chipmunks" seen on the trip, and reaching up to Trapper's Lake, our alti- 

 tudinal limit, were of this variety. 



Callospermophilus lateralis Say, Say's Spermophile, "Big Chipmunk" 

 Common all along our journey, including the extremes in altitude. 



Citellus elegans Kenn., Wyoming Spermophile 



This "ground squirrel" was in evidence from Rifle Gap to 6 miles above Buford, 

 at which place but one was seen, the last on our trip up the north fork. From Rifle 

 Gap to Meeker and Axial it was common, sometimes very abundant. 



Citellus tridecemlineatus parvus Allen, Little Spermophile 

 Only one seen; taken between Axial and Meeker, August 14. 



Cynomys leucurus Merr., White -tailed Prairie Dog 



First seen on the crest of the divide between Rifle and Meeker; numerous from 

 there on down about 2 miles to Rio Blanco Stage Station on Piceance Creek, and on 

 to Meeker; common locally from Meeker to Axial and along Little Beaver Creek; 

 a few from Meeker up White River to a point i| miles below Buford where 

 two, the last of the trip, were seen. 



Marmota flaviventer Aud. and Bach., Western Woodchuck 



Seen in only two localities, between Meeker and Axial, and between Marvine 

 Lodge and Marvine Lakes. Reported to be abundant over the former area. 



Castor canadensis frondator Mearns, Beaver 



A colony a short distance below Fitzgerald's and others scattered along down 

 North Fork and White River, according to reports. Dr. Bergtold states that in 



