318 



ette. It was iu the company of large numbers of O. nigripes. Professor 

 Blatchley, to whom the specimen wos submitted, assigned it to his O. 

 campestre. Mr. Rehn, to whom the same specimen was also sent and who 

 with Mr. Hebard has recently revised the entire genus, informs me it is 

 0. agile. 



Orchelimum nigripes Scudder. An abundant and characteristic species 

 of open grassy bogs and damp situations generally, being especially abun- 

 dant in rice cut-grass, Homalocenehrus oryzoides. 



August 20, moderately frequent in a Homalocenehrus oryzoides bog 

 at the base of a bluff along the Wabash bottoms near West Lafayette (6) ; 

 August 30, abundant in wet places covered with Homalocenehrus oryzoides 

 on river bank and bottoms on the east side of tbe Wabash opposite Battle 

 Ground ; September 6, common in Homalocenehrus oryzoides in a marsh 

 at the foot of the bluff near AYild Cat Creek (10) ; September 13, a few 

 specimens observed in a sedgey bog in low woods along Burnett Creek (2) ; 

 October 3, a few observed in a humid depression covered with lluhlen- 

 hergia near mouth of Wild Cat Creek (11). 



Orchelimum nigripes Scudder (variety). On October 13 and 14 1 

 found a form of this genus in the cat-tail marsh on the upland northwest 

 of Lafayette which I was unable to determine, but which Mr. Rehn to 

 wbom I submitted specimens informs me is a race of 0. nigripes from the 

 typical form of which it differs in the absence of black from the tibiae and, 

 so far as my Lafayette material is concerned, in its somewhat greater size. 

 On the dates mentioned it literally swarmed in tbe mixed cat-tail and rice 

 cut-grass areas of the marsh, but was entirely lacking in the marginal 

 thickets. 



Conocephalus (Xiphidium) fasciatus (DeGeer)- Local and, as a 

 rule, not very common ; found typically in open wet or damp locations 

 thickly covered with succulent grasses and sedges. 



July 19, a male taken in a thick growth of Elymus v-irginieus on the 

 east bank of the Wabash near mouth of Wild Cat Creek (.11) ; July 22, a 

 male taken in a patch of Elymus virginieus on a waste lot on the Purdue 

 Experimental Farm (3) ; August 12, both sexes moderately common in 

 roadside gulleys and in wet depressions covered with low sedges (Carer 

 spp.) on tbe upland between Lafayette and Montmorenci (12) : August 20, 

 a female taken on Homalocenehrus oryzoides in a bog at the foot of the 

 bluffs along the margin of the Wabash bottoms below West Lafayette (6) ; 

 August 30, several examples observed along the margin of a Homaloeen- 



