MORGAN HEBARD 177 



lateral lobes, dorsum of abdomen, three markings on caudal femora and 

 ventral surface buffy or grayish, often very finely tessellate with brown 

 except ventrad. Tegmina unicolorous brown. Caudal femora ventro- 

 internally and ventrad yellowish buff, orange only in a few intensive males, 

 ventro-external portion dull scarlet red, paler in some specimens and yellow 

 buff in the two most recessive females. Caudal tibiae buffy, suffused with 

 brown in the most intensive females, spines black. 



Melanoplus indigens indigens Scudder 



(PI. XII figs. 7 and 8; pi. XIII, fig. 3.) 

 1897. Melanoplus indigens Scudder, Proc. U.S. Nat. Mus., xx, p. 211, pi. 

 14, fig. 4. [ $ ; Salmon City, Idaho.] 



When recording the series here described as indigens missoulae 

 in 1928, the material of payettei here described from the Payette 

 Lake region in Idaho and the Blue Mountains of Oregon was 

 incorrectly referred to indigens, while in the series then described 

 as oregonensis triangularis, material of the present insect from 

 Soldier, McCall and Evergreen, Idaho, was also incorrectly re- 

 ferred to that race. These mistakes were mainly due to the fact 

 that, at that time, the (normally concealed) penis was not known 

 to possess characters of the highest value in distinguishing the 

 species and races of the present group. 



Under indigens missoulae and indigens digitifer here described, 

 comparisons are made with indigens indigens. The species is 

 plastic and the few external differences which distinguish its 

 races could easily be attributed to individual variation if not 

 associated with the differences shown by the penis. 10 



Specimens Examined. — 56; 22 males and 34 females. 



Montana: Rocky Mountain Divide, IX, 29, 1907, IS . 



Idaho: Salmon City, VIII, 1883, (L. Bruner), IS, type, [Hebard Cln. 

 Type No. 102]. Morgan Creek in Salmon River Range, VIII, 15, 1928, 

 (Rehn and Hebard) : summit of pass, 7575 feet, (Very small colonies in 

 scanty Canadian Zone undergrowth of Lodge-Pole Pine and fir forest), 2$ , 

 4$ ; upper creek, 7300 feet, (same environment but more undergrowth), 

 1 # , 1 $ ; hillside at 7080 feet, (occasional on open hillside covered with low 

 mountain plants and some sage brush), 3<$, 10 2 ; upper canyon, 6650 feet, 

 (locally in sage brush particularly near Aspen thickets), 5$, 12$. Galena 

 Summit, Sawtooth Range, 8750 to 9225 feet, VIII, 17, 1935, (M. Hebard; 

 decidedly scarce on slopes at summit with fine grasses and some sage brush, 



10 As the dorsal lobes of the penis show the greatest amount of differenti- 

 ation, but in life are somewhat fleshy, it must be remembered that dis- 

 tortion in drying may occur. Such is, however, fortunately a rare occurrence. 



TRANS. AM. ENT. SOC„ LXII. 



