ECOLOGY — INTERPRETATION OF ENVIRONMENT 327 



had never been ploughed, I frequently flushed the clear-wing 

 locust, a detailed account of which will be found in another 

 chapter. It was persistent in its preference for a small area 

 of only a few yards in extent, shown on the left-hand side of 

 the view. This is of particular interest because the species 

 was scarce in other localities thereabout. 



In the short grass of the near foreground I also met with the 

 short-winged, brown locust, but it was by no means common, 

 and this would not be called a typical habitat for this species. 

 At the border of the woods, especially .as seen in the back- 

 ground, the sprinkled locust found its typical home. When 

 the photograph was taken, August third, a number of these 

 insects were found laying their eggs in pieces of old, dead wood, 

 and the detailed observations given further on relate to indi- 

 viduals found there. In the left of the picture, lying in front 

 of the sycamore tree, is a small light-appearing area of white 

 sand. No vegetation was growing upon it, yet it was of unusual 

 interest. Here, in the proper season, the pits of the ant-lion 

 were very numerous. They have already been referred to in 

 the separate chapter which treats of their habits. Here, 

 also, certain digger wasps, as well as the sand-loving fly, 

 Stichopogon trifasciata, were seen. 



But of particular moment was the fact that the maritime 

 locust lived on this little, circumscribed, barren spot. 

 With it was associated the mottled sand locust, as will 

 be noted farther on. Both of these species, on being dis- 

 turbed, circled around, and often attempted to come back 

 again, and would ultimately do so if not prevented. As is well 

 known, both of these locusts, owing to their harmonious colors, 

 are very well protected while they rest on the light sand. 

 The sweep of sunny, exposed portions of the foreground also 

 harbored the Carolina, the lubberly, the two-striped, the clear- 

 wing, the lurid, narrow-wing, and the red-legged locusts, 

 respectively, each species having their period of appearance 

 in greater or lesser numbers. 



On one occasion I found a female grizzly locust in the 

 shadow of the pine shown at the right of the illustration, which 

 had probably been on the bark. Again, the walking-stick 

 was frequently seen on the trunk of this tree. This insect 



