314 



duce the apparent increase of adults at this time. Mature examples of 

 this species were seen as early as June 16 and as late as October 25. 



Melanoplus fcmur-ruorum (DeGeer). The most abundant grasshop- 

 per, swarming everywhere, except in woodland locations and on very dry 

 and barren ground. Its predilections are for relatively humid areas, and it 

 is in consequence especially abundant in the bottom lands, and about ditches 

 and other moist spots. It avoids dense herbaceous thickets and favors 

 open grasslands and clover fields. It reached maturity by the last of July 

 and was found continuously from then until frost. The last record I have 

 is November 2. 



Melanoplus luridus (Dodge). Of regular occurrence, though not al- 

 v ays common on grassy spots in dry woods or in their immediate vicinity. 

 Usually associated with Spfoaragemon bolli. 



August 1, a male taken in blue grass close to the edge of the woods on 

 the bluffs at the head of Happy Hollow (5), nymphs also found here; 

 August 24, several of both sexes found in mixed blue grass and Pairivum 

 hiiachucw in open woods on a bluff at the head of the ravine (8) be- 

 tween West Lafayette and the mouth and Indian Creek; September 1, a 

 small number in a clearing in the woods on the bluff at the head of Happy 

 Hollow (5) : September 6, frequent in blue grass in a dry open grove on 

 the bluffs near Wild Cat Creek (10), associated here with Melanoplus 

 seudderi. 



Melanoplus biuittatus (Say). All specimens seen were of the red- 

 legged or femoratus type. The species is only moderately frequent and 

 more or less local. It was found in fair numbers about the middle of 

 July on the grounds of the Purdue Experiment Station, but it soon became 

 quite scarce and after the early part of August only occasional individuals 

 were noted and that only in the more or less rank vegetation that flour- 

 ishes in neglected spots along the stream bottoms. 



July 22. moderately frequent in timothy in a waste lot and in the 

 nearby corn and soybean patches on the Purdue Experimental farm (3) ; 

 August 9, fairly common in thickets in or near low woods on Burnett Creek 

 (2) ; August 20, occasional in marshes and surrounding thickets at outer 

 margin of Wabash bottoms below West Lafayette (6) : September 6, a 

 female observed in tall herbaceous thickets at the base of a bluff near 

 Wild Cat Creek (10). 



Melanoplus differentialis (Thomas). Abundant in sheltered situa- 

 tions in all humid situations ; less frequent, but not uncommon in upland 



