174 NORTH AMERICAN MELANOPLI (ORTHOPTERA) 



The type is lost but the original description of the male fur- 

 cula and cerci give convincing evidence that Scudder correctly- 

 recognized the species in 1897. His material then recorded from 

 Fort McLeod, Alberta, represents oregonensis triangularis Heb- 

 ard. In 1932 the author reported a series from Logan Pass in 

 Glacier Park, Montana, of which fifteen males were typical of 

 oregonensis oregonensis or nearly so, one male representing ore- 

 gonensis triangularis. The area of intergradation between these 

 races evidently lies in northern Montana. West of the Bridger 

 Range and the Continental Divide in southwestern Montana and 

 southeastern Idaho, the present species is supplanted by the races 

 of indigens Scudder and the related payettei here described. 



The following unreported material is in the author's collection. 



Montana: Madison County, 8000 feet, VIII, 13, 1919, 13. Continental 

 Divide in Beaverhead County, VIII, 18, 1925, 1 $ . 



Wyoming: Mount Washburn in Yellowstone Park, 9800 feet, VIII, 18, 

 1930, (E. R. Tinkham; on bare grassy ridge), 73,7$; 9300 feet, VIII, 13, 

 1922, (M. Hebard; moderately common on grassy north slopes), 33, 1$ ; 

 8600 feet, VIII, 18, 1930, (E. R. Tinkham), 43, 49. Dunraven Pass in 

 Yellowstone Park, VIII, 31, 1924, (N. Criddle), 13 . Grand Canyon of the 

 Yellowstone River, 7900 feet, VIII, 12, 1922, (M. Hebard; in lush herbage), 

 33, 3$ ; VII, 26, 1923, (B. B. Fulton), 2 3,2$. Sheep Mountain in Gros 

 Ventre Range, 10000 to 10500 feet, VIII, 4, 1922, (M. Hebard; few at 8000 

 feet, moderate numbers but local up to 10200 feet, a very few at 10500 feet, 

 no Orthoptera whatever above that elevation, in Hudsonian Zone herbage 

 above timber line), 15 3 , 11 $ . Menor's Ferry in Jackson's Hole, 6500 feet, 

 VII, 5 to 12, 1922, (M. Hebard; local, moderate numbers in lush grasses 

 and mountain plants in Aspen thickets in valley) , 9 3, 6 $ . Peak north of 

 Death Canyon in Teton Range, 10000 to 11300 feet, VIII, 8, 1922, (M. 

 Hebard; moderately common in Hudsonian Zone herbage, few in Arctic- 

 Alpine Zone grasses and plants), 13 3, 8$ , 2 juvs. Death Canyon in Teton 

 Range, 8600 feet, VIII, 7, 1922, (M. Hebard; very few in mountain meadow 

 of lush vegetation), 3$. 



Idaho: Henry Lake, VII, 28, 1930, 23 ; VIII, 1883, (L. Bruner), 43,5$. 

 Georgetown Canyon in Aspen Range, 6650 to 6800 feet, (Rehn and Hebard; 

 few in Canadian Zone undergrowth in Aspen thickets. 



Melanoplus oregonensis triangularis Hebard 



1928. Melanoplus oregonensis triangularis Hebard, Proc. Acad. Nat. Sci. 

 Phila., lxxx, p. 269, pi. 25, fig. 5. [ 3 , $ ; Middle Fork of Old Man's 

 River (near Fort McLeod) in Livingston Range (type locality) and 

 Waterton, Alberta; Swan Range and Flathead Lake, Montana.] 



