I.— A LIST AND DESCRIPTION OF NEW SPECIES OF OR- 



THOPTERA. 



By Prof. Cyrus Thomas. 



LIST. 



GRYLLIDES. 



Stenopelmatus, Sauta Fe", New Mexico. Too much mutilated to be determined. 

 Gryllus abbreviatus, Serv. Found throughout eastern Colorado. 



Oecanthus niveus, Harr. Found along the streams from Fort Fetterman to Eaton 

 Mountains. 



LOCUSTARIiE. 



Anabrus Haldemannii, Girard. South Park, Colorado, and near Laramie Eiver east of the 

 Black Hills, Wyoming. 



Andbrus Stevensonii, Thos. Northeastern New Mexico. 



Anabrus minutus, Thos. Northeastern New Mexico. 



Thamnotrizon (Anabrus) purpurasecens, Uhler. South Park, Colorado, and near Lara- 

 mie River, east of the Black Hills, Wyoming. 



Thamnotrizon trilirieatus, Thos. Northeastern New Mexico, and South Pass, Wyoming. 



Ephippitytha gracilipes, Thos. Southeastern Colorado. 



Orckeliwuim vulgare, Harr. Found throughout the eastern part of Colorado and 

 Wyoming. 



Xiphidium faschttum, Serv. Colorado. 



Udeopsylla robusla, Hald. Throughout Colorado, Wyoming, and Utah. 



Ceulhophihis divcrgens, Scudd. Hardscrabble Creek, Colorado, and Eed Buttes, 

 Wyoming. 



ACRIDII. 



Opomola neo-mexicana, Thos. Northern New Mexico, and along Cottonwood Creek, 



Wyoming. 

 Acridium flavo-fasciatum, De Geer. Southeastern Colorado. 

 Caloptemis bivittatus, Say. Colorado, Wyoming, and Utah. 

 Caloptemis spretus, Uhler. I have traced this species from the borders of Nevada and 



Idaho on the west, to Missouri and Iowa on the east, and from the Eaton Mountains 



on the south to the Big Horn Mountains on the north, hut have discovered its limits 



only toward the south and east. 

 Caloptemis fcmur-rubriim, De Geer. Common east of the Eocky Mountains. 

 Pezotettix borealis, Scudd. Mountains east of Middle Park. 

 Pezotettix picta, Thos. From Cheyenne south to the Arkansas Eiver. 

 Brachypeplus magnus, Girard. Along the head-waters of the Arkansas, and near the 



Laramie Eiver east of the Black Hills. 

 Boopedon hubilum, Thos. Near Canon City, Colorado. 

 Boopedon flavo-fasciatum, Thos. Southeastern Colorado. 

 Oedipoda Carolina, Linn. Found at a few points in Colorado, especially south of 



Denver. 

 Oedipoda corallipes, Hald. Colorado, Wyoming, and Utah. 

 Oedipoda aequaKs, Say. Common in Colorado and Wyoming. This is an extremely 



variable species. 

 Oedipoda trifasciata, Thos. Common throughout Wj^oming, Colorado, Northern New 



Mexico, and Northern Utah, on the elevated plateaus. 

 Oedipoda neglecta, Thos. Eastern Colorado and North Platte Valley, west of Fort 



Fetterman. I have also collected some specimens in Southern Illinois which appear 



to be identical with this species. 

 Oedipoda earlingiana, Thos. Colorado and Wyoming. 

 Oedipoda cincta, Thos. Southeastern Colorado. 

 Tomonotub Mexicanus, Sauss. New Mexico. 

 Tomonotus nietanas, Sauss. Southeastern Colorado and Southeastern Wyoming 



