The Arachnida of Colorado. 419 



Boulder, 5,400 ft. Gray's Peak, 9,500 to 14,000 ft. 



Canon City, 5,350 ft. Gi-eenhorn, 5,000 ft. 



Cameron Pass, 12,000 ft. ab. timber. Horsetooth Gulch, 5,500 ft. 



Colorado Springs, 6,000 ft. Kelso's Cabin, 10,890 ft. 



Delta, 4,900 ft. Leadville, 10,200 ft. 



Denver, 5,200 ft. Livermore, 7,000 ft. 



Dixon's Canon, 5,500 ft. Long's Peak, 12,000 ft., above timber. 



Elk River, 7,000 ft. Manitou, 6,350 ft. 



Estes Park, 7,500 ft. Mt. Richtophen, 9,500 ft. 



Ft. Collins, 5,000 ft. Rist Canon, 6,500 ft. 



Four-:\Iile Hill, 7,000 ft. Steamboat Springs, 6,000 ft. 



Golden, 5,700 ft. Swift Creek, 7,900 ft. 



Grand Junction, 4,550 ft. Trinidad, 5,900 ft. 



Mr. Baker proposes the following terms : sub-alpine^ up to 

 5,500 feet, or beginning of foot hills; mid-alpine, from sub-alpine 

 to timber line ; high-alpine, above timber line. 



It will be found, however, in looking through the following 

 pages that there is little difterence between the sub-alpine and 

 mid-alpine regions. But most of the southern and western forms 

 occur at low latitudes ; yet with them are mingled truly northern 

 species, 



THERAPHOSID.E. 



Bothriocyr um californicum Cambr. 



Recorded from the State by Simon. 

 Eurypelma marxi Sim. 



One male, 25 mm. long, agrees well with Simon's description ; 

 it is black with some long fulvous hair on the abdomen ; and red- 

 dish maxilla? and lip. Cafion City (Gillette). 



HyPOCHILID.E. 

 H5rpochilus thorelli Marx. 



Recorded b}' Emerton from Colorado. 



PHOLCID^. 

 Pholcophora americana Bks. 



Fort Collins, in house (A[rs. Baker). 

 Pholcus puUulus Hentz. 



Recorded by Thorell from Manitou, July ; Fort Collins under 

 a board (Baker). 



DRASSID.E. 

 Micaria perfecta Bks. 



Fort Collins (Gillette), on lawn (Mrs. Baker). 



