174 NOKTH AMERICAN OEDIPODINAE (oRTHOPTEKA; ACRIDIDAE) 
far north as (larrison, Montana, south to Gray C'reek, Colorado, 
oast to Powderville, Montana, and Hecda, Wyoming. Atypical 
material showing weak tendencies toward the new subspecies is 
availal)le from Idue Lake, Grand Coulee, Washington; Shoshone, 
Salmon City, Birch Creek, Springfield, Pocatello and Soda 
Siirings, Idaho; Bozeman, Montana and iMammoth Hot Springs, 
Yellowstone National Park. Actual intermediates between the 
two races are before us from Chilcotin, British Columbia; La 
('happles, Yakima River, Washington, and Salt Lake Yalley, 
Utah. When the distribution of typical carb'nranMs is compared 
with that of the subsiiecies strepitus, it will be seen that the former 
is a more northern and eastern tyjie, and that it is not stable nor 
fully typical in the Snake River country of Idaho. It is also in 
a stage of what might be called equal fusion with A. c. strepitus in 
regions as related to the Snake River country as the Salt Lake 
\'alley disti'ict, and to the Great Basin region as the Columbia 
Plains (Yakima River) and the dry interior of British Columbia 
(Chilcotin). 
Aerochoreutes cariinianus strepitus® new suijspccies (Plate XI, figs. 4 
to G.) 
A strikingly marked geographic race of cariinianus, in its typi- 
cal form inhabiting the Great Basin and Green River regions, 
differing from typical cariinianus, as delimited above, in the fol- 
lowing features: Eyes larger, more lU’ominent when seen from 
the dorsal and the cephalic aspects; tegmina longer and more 
sh'iider, ixdatively quite slender at apices; wings elongate, an- 
((M'ior and a.xillary fields much produced, apical section subfal- 
cal(‘; ulnar area of wings wider than in cariinianus cariinianus; 
iid(M'axillaiy area of wings relatividy narrow. These features 
are more accent uati'd in tlu; male than in the female sex. 
Type . — cf ; Pi'incc' Royal Canyon, Star Ik'ak Range, Hum- 
boldt ('ounty, N('vada. hilevation, doOO to oOOO feet. Septem- 
ber H). 101!). (H(‘hn and Ih'bard.) [Hebard Collection, Type 
no 7()().j 
Flic following lonturcs arc (Giicfly coiuparal ivo with .1. c. curlinianm.' 
I'orm more elongate, due to greater length of tegmina and wings. Head 
with ey(!s inoi’e proniineid from dorsum and from cephalic^ aspect, in latter 
view weakly l)ut aj)parently ehnaitcd above; levad of fastigium: fastigium 
“ Strepitus, rldtlcriiig. 
^ t omparisons made* with male Irom l'\)rl Ctollins, Colorado, (l)yar and 
Caudell), lllehard Cln.l. 
