U0 
ing the Wabash valley about three miles southwest of Lafayette. Col- 
lecting was done only along the right of way of the Wabash Railroad. 
This locality was visited only once, and that on October 12, when many 
species had died out or become very scarce. Only five species were noted, 
four of which were common in the waste lots adjoining the railroad. They 
were VWelanoplus femur-rubrum, Enceoplolophus sordidus, Dissosteira car- 
olind and JMelanoplus atlanis, the last-named being the least frequent. 
The only other species observed on this trip was a male Schistocerca amer- 
icana which was found in a local growth of Andropogon furcatus. 
14. This was a very interesting undrained depression of considerable 
size situated in an open field on the upland about two miles northwest of 
West Lafayette. The substratum in the depression was a dark muck. At 
the time of my visit, October 13-14, it was quite dry and crisp at the sur- 
face, but within a fraction of an inch below was still quite moist and 
sticky. The centre of the swamp was nearly devoid of vegetation; doubt- 
less in times of normal rainfall it is submerged. Surrounding this is a 
wide fringe of reedy vegetation formed of cat-tails, Typha latifolia and a 
tall species of rush, which was similar in general aspect to Juncus cffusus, 
though owing to the lateness of the season I was unable to certainly iden- 
tify it. Intermixed with both of these was a luxuriant growth of rice cut- 
grass, Homalocenchrus oryzoides. Surrounding these again was an outer 
thicket of tall herbaceous plants, such as asters, goldenrods, iron-weeds, 
sunflowers and their associates. 
The Orthoptera of this swamp were unlike any found elsewhere in the 
extreme abundance of two Tettigoniids, a peculiar color-phase of Orcheli- 
mii nigripes and Conocephalus attenudatus, both of which simply swarmed 
throughout the Typha-Homalocenchrus areas although they largely avoided 
the rush and were entirely lacking in the herbaceous margibal thicket. The 
large numbers of Conocephalus attenuatium in this place was surprising, for, 
although it has been known for a long time to be-native to the state, I had, 
previous to my discovery of this marsh, been able to procure only a single 
example in the region about Lafayette and was accordingly inclined to 
look upon it as a very rare species in this particular part of the State. 
Other species associated with the two species just mentioned in the cut- 
grass-cat-tail formation were Conocephalus nigropleurum, Conocephalus 
saltans and a small Orchelimum which Mr. Rehn has assigned to O. agile. 
All of these were quite scarce at the time I examined the place, only a 
20—4966 
