The Arachnida of Colorado. 433 



TETRANYCHID.E. 

 Bryobia pratensis Garman. 



Recorded b}- Mr. Baker from the State. 



BDELLID^E. 

 Bdella peregrina Bks. 

 Fort Collins (Baker). 



Eupalpus echinatus Bks. 



Fort Collins, attached to a species of Geresa (Gillette). 



EUPODID.E. 

 Rhagidia pallida Bks. 



Fort Collins, among dead leaves, November (Gillette). 

 Liiiopodes antennaepes BlvS. 



Fort Collins, among dead leaves, November (Gillette). 



ORIBATID^. 

 Belba australis Bks. 



Two specimens. Fort Collins, among dead leaves, November 

 (Gillette). 



GAMASID.E. 

 Laelaps sp. 



Fort Collins (Gillette). 

 Iphis sp. 



Fort Collins (Gillette). 



DERMANYSSID.E. 

 Demianyssus gallinae Fiedi. 



Fort Collins, from chickens (A. Cameron). 



IXODID.E. 

 Dermacentor americanus Linn. 



Ixodes variahiUs Say. 

 Fort Collins, sweeping and from neck of man, 

 Rhipicephalus sp. 



One specimen from Kittdeer, Fort Collins (R. C. Stephenson). 



TYROGLYPHID.E. 



Homopus (?) sp.(?) 



Fort Collins, on wood-mouse (Gillette). 



