408 PROCEEDINGS OF THE ACADEMY OF [Sept., 



Melanoplus bilituratus (Walker). 



Salt Lake City, Utah, Aug. 13, 1 c? . Top of Ensign Peak, Salt Lake 

 City, Aug. 13, 1 d". 



These specimens are perfectly typical of bilituratus, which is probably 

 only a race of atlanis. This is the first record of this species from Utah, 

 and the first one east of Fort Halleck, Elko Co., Nevada, except one 

 from Weeksville, Missoula Co., Montana. 



These two specimens were both taken on hilly ground covered with 



Melanoplus spretis (Thomas). 



Garden of the Gods, Colorado, Aug. 17, 2 $ . ^Mountain View, Pike's 

 Peak, Colorado, Aug. 20, 9,705 feet, 1 c?. 



The capture of these specimens is of considerable interest as it shows 

 that this very destructive species is still present, either as a migrant or 

 as a native, in regions formerly devastated by it. The absence of recent 

 records of this species from Colorado shows it has become a scarce 

 species. The material examined has been compared with individuals 

 from Nebraska and North Dakota. 



Two specimens from the Garden of the Gods were taken in a grassy 

 meadow, while the other specimen was taken in an aspen thicket in 

 sparse grass. 

 Melanoplus defectus Scudder. 



Muir, Bozeman Tunnel, Park-Gallatin Co., Montana, Aug. 12, 2 d^. 

 Mammoth Hot Springs, Yellowstone Park, Aug. 5, 1 c?. Summit of 

 first foothill of Gallatin range. Mammoth Hot Springs, Aug. 5, 2 c?, 3 9 . 

 Top of bare hill opposite Devil's Kitchen, Mammoth Hot Springs, Aug. 

 5,1 6". 



This species, previously known only from the type locality. Grand 

 Junction, Colorado, and Nebraska, is quite distinct from the atlanis- 

 spretis type, the form of the subgenital plate, which is considerabh^ 

 elongate, being at a glance sufficient to separate it. 

 Melanoplus dawsoni (Scudder). 



Muir, Bozeman Tunnel, Gallatin-Park Co., Montana, Aug. 12, 2 c?, 

 8 9 . Knob Hill, Colorado Springs, Colorado, Aug. 22, 2 9 . Manitou, 

 Colorado, Aug. 23, 1 c^, 7 9 . Hillside near Manitou, Colorado, 6,700 

 feet,Aug. 16, 5c?,7 9. 



Material from Fort Collins, Colorado, has been examined in this con- 

 nection. All the material studied belongs to the short-winged type 

 of the species. Taken as a whole the series examined is c{uite uniform 

 in size, and with such color variation as does exist being chiefly in the 

 lighter or dark shade of the general color. 



