SUBFAMILY III. LOCUSTIX.K. 451 



behind; median carina usually visible throughout, low and often indis- 

 tinct on prozona; hind margin broadly obtuse-angled; prozona about a 

 third, male, or scarcely, female, longer than the finely rugulose metazona. 

 Tegmina slightly surpassing the hind femora in both sexes, very gradually 

 tapering to a well-rounded apex. Supra-anal plate of male very broadly 

 triangular, almost flat, the apex acute; median sulcus wide, shallow, con- 

 fined to the basal half. Furcula wanting. Cerci large, broad, roughly 

 boot-shaped; basal half oblong, apical half expanded to nearly double the 

 width of the basal, the upward expansion twice or more as large as the 

 downward; the latter thin, and extended back as a wing-like border along 

 the basal half (PI. IV, r.) Subgenital plate of moderate width, its apex 

 abruptly elevated into a conical tubercle. Lower valves of ovipositor al- 

 most straight, the lateral tooth nearly or quite obsolete. Length of body, 

 $, 19 24, $, 2729; of antennae, $ , 1314, $, 1112; of pronotum, $, 

 4.G 5.5, $, 5.76.3; of tegmina, $, 1720, 9, 18.5 22; of hind femora, 

 $ , 11.513, $ , 1214.5 mm. 



Iii Indiana this prettily mottled locust has been taken in nu- 

 merous localities throughout the State, but is nowhere common, 

 seldom more than half a dozen being seen each season. It is pre- 

 eminently an autumn insect, the first mature specimen having 

 been taken on August 20th, while most of those seen were in Oc- 

 tober and November after heavy frosts, several pairs having been 

 found mating on September 24. In central Indiana it frequents 

 for the most part low wooded tracts along streams, where it may 

 often be noted resting on the trunks of trees, two or three feet 

 above the ground. In the northern part of the State it has been 

 found only in the depths of the tamarack swamps of Fulton and 

 Marshall counties. While other Acridida? are common up to the 

 very border of the tamarack growth, this and two species of 

 grouse locusts were the only ones found within this border. It 

 is more arboreal in habits than any of our other northern Melan- 

 opli, in most places frequenting the vicinity of pine or coniferous 

 trees, but in Indiana these are rare, and it has been taken mostll 

 on those of oak. beech and ma] tie. In action it is rather sluggish, 

 after one or two short leaps usually squatting close to the earth, 

 and seemingly depending upon the close similarity of its hues to 

 the grayish lichens or debris about it to avoid detection. 



The general range of typical pinictiihihis is northern, extend- 

 ing from Maine and Ontario west to Minnesota and Nebraska, 

 south to Virginia and Georgia and southwest to Dallas, Texas. 

 It is noted as scarce wherever found except near Thompson's Mills 

 in northern Georgia, where Allard (101(5, 278) states it "was a 

 very common species in all upland fields in company with H. 

 fcniur-nihruin." From Ohio it has been recorded only from Cedar 

 Point, while it is not mentioned in any of the Michigan lists. 



