318 
ette. It was in the company of large numbers of O. nigripes. Professor 
Blatchley, to whom the specimen wos submitted, assigned it to his 0. 
campestre. Mr. Rebn, to whom the same specimen was also sent and who 
with Mr. Hebard has recently revised the entire genus, informs me it is 
O. 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, Homalocenchrus oryzoides. 
August 20, moderately frequent in a Homalocenchrus oryzoides bog 
at the base of a bluff along the Wabash bottoms near West Lafayette (6) ; 
August 30, abundant in wet places covered with Homalocenchrus oryezoides 
on river bank and bottoms on the east side of the Wabash opposite Battle 
Ground; September 6, common in Homalocenchrus oryzoides in a marsh 
at the foot of the bluff near Wild 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 Muhlen- 
bergia near mouth of Wild Cat Creek (11). 
Orchelimum nigripes Scudder (variety). On October 13 and 14 I 
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 
whom I submitted specimens informs me is a race of O. nigripes from the 
typical form of which it differs in the absence of black from the tibiz and, 
so far as my Lafayette material is concerned, in its somewhat greater size. 
On the dates mentioned it literally swarmed in the 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 Hlymus virginicus on the 
east bank of the Wabash near mouth of Wild Cat Creek (11); July 22, a 
male taken in a patch of Blymus virginicus 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 (Cares 
spp.) on the upland between Lafayette and Montmorenci (12); August 20, 
2 female taken on Homalocenchrus 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 Homalocei- 
