300 



areas containing only scattered grasses, but with many low saplings and 

 some herbaceous undergrowth. The woods on the upper portions of the 

 ravine slopes adjoining the upland were of the mixed hardwood type. The 

 dominant tree was the white oak, but with it were many hickories, elms, 

 sugar maples, lindens, red oaks, beeches and dogwoods. 



Collections were made in the open fields above the woods, along the 

 borders of the woods and in the woodland scrub areas. In the more open 

 areas, farthest from the woods, wherever the blue grass or its congener, 

 Poa compressa, was thick and luxuriant, common species were Melanoplug 

 femur-rubrum, Encoptolophus sordidus and Conocephalus st rictus ; Syrbula 

 admirabilis was of frequent occurrence. Where the grass was shorter and 

 coarser with some interspaces a number of additional species were com- 

 mon such as Melonoplus allanis, ArpMa xanthoptera, Dissosteira Carolina 

 and Hippiscus rugosus. Of Arphia xantlioptera and Hippiscus rugosus both 

 the yellow-winged and the red-winged types appeared to be about equally 

 frequent. Both of these secies were common in the more barren areas 

 along the very edge of the woods, where they were associated with 

 Spharagemon bolU and AleJanophis luridus, each of which was of frequent 

 occurrence, but did not appear to spread any appreciable distance from the 

 immediate vicinity of the trees. Within the woods in the scrub areas pre- 

 viously referred to the two last-mentioned species were the only ones 

 found. Other species occurring at this locality were Chortophaga viridifas- 

 ciata and Orchelimum vulgare, long-winged phase. Nymphs of the former 

 were frequent in some areas of dwarfed blue grass in spring and again in 

 the fall, while a smaller number of the latter were found in a scrub area 

 along the borders of the woods. 



6. This includes the outer edge of the Wabash bottoms a short dis- 

 tance south of West Lafayette. The outer edge of the bottoms at this 

 point is marked by a gently sloping bluff which leads up to the second 

 bottoms of West Lafayette. Near the base of the bluff is a road and below 

 the road, between it and the level surface of the present bottom, is a short 

 slope which was partially wooded, the common trees being cottonwoods, 

 honey-locust, hackberry, elm and shingle oak. The woodland here formed 

 a narrow fringe and beyond it, occupying all the level areas, were the 

 usual corn fields of the bottoms. Beneath the trees was a fairly dense 

 undergrowth of shrubs and tall grasses of which species of Elymus were 

 most frequent, especially E. virginicus. The soil was a mixture of the 

 gravel derived from the material of the bluff itself and alluvium depos- 



