SUBFAMILY I. TRYXALIN.E. 235 



smaller and more slender body. Length of body, $, 13 15, $ , 15 24; of 

 antennae, $, 8.5 10.5, $, 6.58; of tegmina, $, 8.515, $, 716; of hind 

 femora, $ , 10.5 11.8, $ , 11.514 mm. 



This is a very common locust throughout northern Indiana, 

 but has not been taken south of Putnam and Vigo counties. It 

 abides in low, wet prairies, swales, damp meadows, and especially 

 in the vicinity of tamarack swamps. These conditions of local 

 habitat are common in the northern half of the State, but scarce 

 or wanting in the southern half, except in the extensive lowlands 

 along the Wabash River in Knox and Gibson counties, but there 

 the locust seems to be absent. In Putnam County it occurs in 

 blue-grass pastures along the banks of streams in open woodland, 

 and begins to reach maturity about June 20th. By July 1st, it 

 has become fairly common, and it may be taken until mid-October 

 or even later, if the frosts are not too severe. In Indiana the male 

 seems everywhere less abundant than the female, and is an active 

 and noiseless flier. The female, being usually shorter winged, 

 endeavors to escape by leaping and tumbling, and, says McNeill, 

 "its astonishing facility as a tumbler and contortionist generally 

 discourages all but the most determined efforts for its capture." 



If the records can be relied upon, the range of C. cuiii/x'iuiis is 

 almost as great as that of any other North American locust. It is 

 mainly, however, an inhabitant of the Transition and Canadian 

 zones, and of mountainous regions where similar climatic condi- 

 tions prevail. It occurs in all parts of New England, and is found 

 from Cape Ray, Newfoundland (ffclMirfl. 1015a) north and west 

 in Canada to Nipigon, Ont, and Vernon, B. C., it being by far 

 the most abundant Orthopteron in the less dry parts of Saskatche- 

 wan and Alberta (Walker). In the United States it is known to 

 occur as far west as Soldier Mountain, Idaho and Sappington, 

 Mont., and southwest to Beulah, N. Mex. In the eastern States 

 it is not known south of the mountains of North Carolina, where 

 it ranges from an altitude of "about 3,200 feet to the highest 

 points in the State where suitable environment occurs." From 

 Maryland west to eastern Nebraska it is not recorded south of 

 central Indiana and central Illinois. At Pequaming, Mich., He- 

 bard found it fairly swarming by the middle of July in meadows 

 of tall grass, and was able at any time to take a dozen or more 

 with a few sweeps of the net. 



Scudder (1874, 373) has given a description of the song habits 

 of citrtipennis as follows: "When about to stridulate, these in- 

 sects place themselves in a nearly horizontal position, with the 

 head a little elevated ; they then raise both hind legs together, the 



