426 The Arachnida of Colorado. 



Eperia trifolium Heutz. 



Recorded by Dr. Marx. 



Epeira labyrinthea Hentz. 



Fort Collins, Steamboat Springs, Four-mile Hill, Elk River, 



Jul}'. 



Epeira parvula Keys. 



Fort Collins, sweeping low herbage, September (Gillette). 

 Epeira displicata Hentz. 



Fort Collins, sweeping alfalfa; Steamboat Springs, May, July 

 (Baker). 



Plectana stellata Hentz. 



Fort Collins, sweeping and under stone, November. 

 Singa variabilis Em. 



Fort Collins, sweeping low herbage; Steamboat Springs, May, 

 July (Baker). 



Argiope transversa Era. 

 Fort Collins (Baker). 



Cyclosa conica Pall. 



Estes Park, Jul}' (Gillette). One specimen. 



Larinia borealis Bks. 



Three specimens. Fort Collins, sweeping, June. 



Tetragnatha grallator Hentz. 



Boulder, Manitou, Golden, Jul}' (Thorell). I have seen only 

 some young specimens from Steamboat Springs, July (Baker). 

 Tetragnatha laboriosa Hentz. 



Fort Collins, Steamboat Springs, Elk River, Mount Rich- 

 tophen ; sweeping, May, Jul}-. Very abundant. 

 Pachygnatha autumnalis Keys. 



One female. Fort Collins, under stones, November (Baker). 

 Pachygnatha brevis Keys. 



Fort Collins, low herbage, among dead leaves and under stones, 

 September, November. 



THOMISID.E. 

 Xysticus auctificus Keys. 

 Described from the State. 



Xysticus benefactor Keys. 



Fort Collins, Steamboat Springs, July. Two specimens. 

 Xysticus locuples Keys. 



Recorded by Keyserling. 



