326 FAMILY VI. ACRIDID^. THE LOCUSTS. 



domen, sometimes to apical fourth, their inner margins feebly overlapping. 

 Supra-anal plate of male triangular, its apex acute-angled, the basal two- 

 thirds with a distinct median groove between two feebly converging ele- 

 vated ridges. Cerci straight, suberect, shorter than supra-anal plate, 

 feebly tapering and somewhat falcate, the apical half less than half as 

 wide as base and slightly sulcate on outer face (Fig. 118, a.) Length of 

 body, $, 2123, 9, 28 31; of antennae, $ and 9, 10.5; of tegmina, $, 

 8.510, 9, 1014; of hind femora, $, 13.516.3, 9, 17.520 mm. 



This olive-green locust is not known from either Indiana or 

 Florida, but is recorded from Illinois and Georgia, and is in the 

 Davis collection from Mississippi. Specimens at hand are from 

 Lincoln, Neb., Fayetteville, Ark., Marcy, Okla., and Bosque Co., 

 Texas; Sept. 5 Oct. 28. Ranges from Illinois and Georgia west 

 to Nebraska and southeastern Colorado, and southwest through 

 Kansas and Oklahoma to Fort Worth, Texas. In Illinois Hart 

 found it moderately common in August on the grassy dunes near 

 Havana and Meredosia and states (1907, 283) that it is "abun- 

 dant on the lance-leaved ragweed, Ainbroxifi bhlcntata Michx., on 

 the dry soils of the Illinoisan glaciation across southern Illinois." 

 He also records C. acutipennis Scudd. from that State, but this 

 record is based upon dark grayish examples of olivacca as C. acut- 

 ipennis is only a color variety of that species. 



R. & H. (1910, 207) record the finding of one adult and numer- 

 ous nymphs near Macon, Ga., on July 31. There they occurred in 

 thick grasses and weeds along the edges of woods. They state 

 that the young could be readily distinguished from other Locustid 

 nymphs by their striking whitish antenna* annulate with dark 

 brown, these colors greatly fading in the dried specimens. 



Scudder says that in Texas IJelfrage found C. olirarca fre- 

 quently sitting on the fences in autumn. Brunei' (1897) states 

 that in Nebraska it occurs upon sunflowers, HcJianthus, pigweed, 

 CJienopoflinnt, and beets. Of its occurrence in Arkansas, Okla- 



Fig. 118. Extremities of male abdomens of genera of Melanopli showing the form of 

 cerci, etc. X 4- < Campylacantha oliracca', b, Eotettix signatits; c, Podisma glacialis', 

 d, Podisma raricgata', e, Aptcnofcdcs sphenarioides. (After Scudder.) 



homa and Texas, Morse (1907, 44) has written: "This species, 

 with its color variety, ucntipenn'tx, is a widely distributed and 

 often locally very common locust, occurring among weeds in fields, 

 along fence-rows and woodland edges. The green form very 

 greatly outnumbers the gray, though the latter is by no means 



