MORGAN HEBARD 383 



ternal features sufficiently constant to enable certain identifi- 

 cation. 18 



In addition to the type, allotype and a paratypic male the fol- 

 lowing material is in the author's collection. 



British Columbia: 19 Cranbrook, VIII, 20, 1925, (E. R. Buckell), 1 d\ 1 9 . 

 Revelstoke Mountain, VIII, 12, 1923, (P. N. Vroom), 1^,1 9 . Rockcreek, 

 VI, 9 to 25, 1922 and 1923, 3 <?\ VIII, 21, 1922, 1 9, (all E. R. Buckell). 

 Aspen Grove, VII, 13 and 14, 1922, (E. R. Buckell), 6 d\ 5 9- Merritt, 

 VIII, 3, 1931, (R. H. Beamer); 1 9, [Univ. of Kansas]. 

 Idaho: Wallace, VIII, 19, 1917, 19. 



Melanoplus repetinus new species (PI. XXVI, fig. 10) 



1920. Melanoplus oreophilus Hebard (in part), Trans. Amer. Ent. Soc, 



xlvi, p. 384. [cf , 9 ; Washington Gulch in the foothills of the Elkhorn 



Range of the Blue Mountains, Oregon.] 



In 1920 the male penis was not known to show striking diag- 

 nostic characters in many species of the Melanopli. In this organ 

 repetinus differs very widely from oreophilus, but in coloration, 

 color pattern and external structure it agrees so closely that we 

 can find no other feature by which individuals may be dis- 

 tinguished with any certainty. Such a situation has recently 

 been found by us in species we have described, cherokee and 

 acrophilus of the Viridipes Group of Melanoplus. The value of 

 the penis in distinguishing certain species of Melanoplus was dis- 

 covered some years ago by T. H. Hubbell, who at that time found 

 that packardii and foedus foedus had been generally confused, but 

 that the very different penis would at once show to which species 

 any male belonged. 



In large series of both repetinus and oreophilus before us the 

 structure of the penis is strikingly constant and in no individual 

 is convergence between the two shown. 



Type. — cf; Middle Onion Patch, Strawberry Peak, Oregon. 

 Elevation 8250 feet. August 21, 1928. (Rehn and Hebard). 

 [Hebard Cln., Type no. 1262]. 



18 Variation in degree of development of a subapical tubercle on the sub- 

 genital plate excludes this feature as a character of value, though when we 

 described oreophilus we believed it had diagnostic importance. 



19 E. R. Buckell has kindly sent us the additional information that he has 

 also examined material of washingtonius from Premier, Wasa, Nelson, Grand 

 Forks, Nicola and Canyon House, British Columbia. 



TRANS. AM. ENT. SOC, LX. 



