418 FAMILY VI. ACRIDIDJB. THE LOCUSTS. 



narrow, feebly or not at all sulcate. Pronotum with median carina visible 

 throughout, more distinct on metazona; hind margin broadly obtuse-an- 

 gled; prozona longer than broad and one-fifth longer than the finely punc- 

 tate metazona, male, subquadrate and subequal in length to metazona, fe- 

 male. Tegmina 59 reaching tip of hind femora in both sexes, moderately 

 broad and tapering. Supra-anal plate broadly triangular, almost flat, the 

 apex acute-angulate, margins scarcely elevated ; median sulcus confined to 

 basal half, its bounding ridges rather high. Furcula consisting of a pair 

 of very short triangular processes lying upon the bases of the median 

 ridges of supra-anal plate (PI. Ill, /.) Cerci narrow, slightly shorter than 

 supra-anal plate, compressed, straight, the middle third about one-half as 

 broad as the extreme base, the apical third but little expanded, the tip 

 rounded. Subgenital plate scarcely longer than broad, subconical. 

 Length of body, $, 1819, $, 22 23; of antennae, $ and $, 8; of pro- 

 notum, (J,5, $,5.5; of tegmina, $, 15 16, 9, 15 IS; of hind femora, $, 

 1112, 9, 12.513 mm. 



So far as known this species has been taken in Indiana but 

 once. This was on July 10, 1902, when I found it plentiful on a 

 sandy wooded slope in Gibson County, about ten miles southeast 

 of Mt. Carmel, 111., and at a point where the terrace on the Indi- 

 ana side of the Wabash River meets the sandy uplands. Here, 

 among the scant grass and weeds the insect had found a suitable 

 abiding place. The males take to wing readily when disturbed, 

 but the females seem to depend only on their short hind legs to 

 take them out of sight of their pursuer. 



The known range of iutpucUeus is mainly southern, its most 

 northern recorded station being Havana, 111., where Hart found it 

 in small numbers in August in sandy areas covered with black- 

 jack oak. He states (1907, 234) that it is ''common on high rocky 

 slopes of the Ozark ridge in southern Illinois." Its main distribu- 

 tion east of the Mississippi is from New Jersey southwest to Meri- 

 dian and Monticello. Miss. West of that stream it is recorded 

 only from northwestern Arkansas and Oklahoma. Morse (1907, 

 49) calls it "a widely distributed but somewhat local species fre- 

 quenting the grasses of dry open woodlands and sometimes also 

 fields of sandy or stony soil." In New Jersey Fox (1914, 514) 

 says it is restricted to the Pine Barrens where it appears to be 

 locally frequent, occurring only in pine or mixed pine and oak 



woods. 



Series XI. THE FEMUR-RUBRUM GROUP. 



Medium or small sized species of a dull reddish- or grayish- 

 brown hue, having the postocular dark stripe usually distinct on 

 prozona in both sexes; median carina of pronotum percurrent, 



59 Scudder, in his original description, gives them as "surpassing a little, male, or con- 

 siderably, female, the hind femora," but this is not true of Indiana specimens. 



