378 NORTH AMERICAN MELANOPLI (ORTHOPTERA) 



of disk from lateral lobes and cerci with broader and more def- 

 initely truncate apices, were it not for salmonis here described, a 

 species which is clearly nearer the former but has the pronotal 

 contour and as little contrast in coloration as the latter species, 

 while the shorter and more tapering cerci are distinct from either. 

 The species included in this group have pad-like tegmina, 

 simple male cerci which are neither bent inward nor have the 

 external surfaces of their apices concave, male subgenital plate 

 with tubercle very weak to rather well developed and pink caudal 

 tibiae. 



Melanoplus montanus (Thomas) (PL XXVII, fig. 7) 



1873. Pl[atyphyma] montana Thomas, Rept. U. S. Geol. Surv. Terr., v, p. 

 155. [o% 9; Montana.] 



Until the penis of this species and its allies was studied, decided 

 uncertainty existed as to whether or not races instead of species 

 were represented. Large series now before us representing all the 

 known as well as a number of undescribed forms show that each 

 must be given full specific status. 



The following material, in addition to large series already re- 

 ported, 15 is now before us: 



Alberta: Cold Lake, VI, 12, 1930, (E. R. Tinkham), 1 cT (showing extreme 

 depauperation). 



Montana: Avalanche Lake, Glacier National Park, 4400 feet, VIII, 17, 

 1930, (E. R. Tinkham), 2 d\ 1 9 . Haugan, VIII, 9, 1931, (R. H. Beamer), 

 18 cf, 21 9, [Univ. of Kansas]. 



Wyoming: Big Horn Mountains, (L. Bruner), 2 c*. Mount Washburn, 

 Yellowstone National Park, western slope at 9300 feet, VIII, 13, 1922, (M. 

 Hebard; in scant vegetation on edge of conifer forest), 2 cf; 8600 feet, VIII, 

 18, 1930, (E. R. Tinkham; in long grass on south slope), 1 d", 1 9 . 



British Columbia: Crows Nest, VIII, 31, 1930, (E. R. Buckell), 1 9 . 



The distribution of this species is now known to extend north 

 to Cold Lake, Alberta : east as far as that locality and the Water- 

 ton Lakes, Alberta; Avalanche and Upper Little St. Mary Valley 

 in the Glacier National Park, Helena and Bozeman Mountain, 



15 Glover; Illustr. N. A. Ent., Orth., pi. 18, fig. 11, (1874). Scudder, 

 Proc. U. S. Nat. Mus., xx, p. 232, pi. 15, fig. 8, (tf\ 9 ; Montana), (1897). 

 Rehn and Hebard, Proc. Acad. Nat. Sci. Phila., 1906, p. 409, (Wyoming 

 records). Hebard, Proc. Acad. Nat. Sci. Phila., lxxx, p; 272, (Montana 

 records), (1928). Hebard, Proc. Acad. Nat. Sci. Phila., lxxxii, p. 393, 

 (Alberta records), (1931). 



