SUBFAMILY III. LOCUSTINJE. 417 



me, $, 1214, $, 1011; of pronotum, $, 55.5, $, G 6.5; of tegmina, 

 $, 1821, $, 2223; of hind femora, $ and $, 1416 mm. 



Lake County, Tnd. ; Moline, TIL; Sidney, Neb.; Timnath, Colo.; 

 August September. Known from Indiana only from near Pine, 

 Lake Co., where specimens were taken by J. 1). Hood, Sept. 3. 

 Ranges from northwestern Indiana to Montana and Colorado, 

 south and southwest to Kansas, southern Texas, Las Cruces, New 

 Mex., and Tucson, Ariz. 



This trim graceful-bodied locust is a xerophytic species occur- 

 ring mainly in dry sandy places. Scudder's types were from Colo- 

 rado. McNeill (181)1, 75) first recorded and described it from 

 Illinois under the name .17". ccnHiri, a synonym, stating that it oc- 

 curred only on "high sandy ground where the sand-bur, CcncJints 

 tribuloides L. was the only vegetation. They were colored so 

 nearly like the yellow sand that they were difficult to see when 

 only two or three feet away/' Hart (1907, 233) states that it is 

 "common everywhere in blowouts and on very sandy ground" in 

 northwestern Illinois, and also records it from Lone Rock, Wis. 

 Vestal (1913, 23) states that from July 19 to October 10 it is the 

 "most characteristic locust of the bare sand, blow sand and bare 

 basins of blowouts' 1 in northern Illinois. It is not recorded from 

 Iowa or Minnesota, though it probably occurs in both states. 

 Brunei' reports it as rare in southwestern Nebraska. Gillette 

 (1904, 50) states that in Colorado it is "a plains species, occurring 

 sparingly in the southern portion of the State. It is abundant in 

 grass pastures along the foothills, near Fort Collins, and has been 

 taken feeding upon alfalfa, cabbages, leaves of plum and cherry 

 trees and upon Artcinixiii trifolhi, so that wherever a food supply 

 of native plants becomes scarce this species is likely to become 

 seriously injurious to cultivated crops." 



Series X. THE IMPUDICUS GROUP. 



This group being represented by but a single species its prin- 

 cipal characters are given in the series key and in the description. 



195. MELANOPLUS IMPUDICUS Scudder, 1897b, 22. Immodest Locust. 



Size medium for the genus, -the females but little the larger. Color 

 much as in atlanis, the dark spot on upper part of pronotal lobe smaller 

 in the male, often obsolete, female; median area of tegmina with fewer and 

 smaller fuscous spots; dark bars of hind femora narrower and less dis- 

 tinct; lower face orange-red. Hind tibiae bright red, the spines black, 

 paler at extreme base. Occiput slightly swollen, distinctly elevated above 

 the pronotum; interocular space as broad, male, or one and a half times as 

 broad, female, as first joint of antennas. Pastigium strongly sloping, feebly 

 sulcate in both sexes. Frontal costa short, not reaching clypeus, rather 



