6 University of Michigan 



UNMODIFIED MODIFIED OR ARTIFICIAL 



(Lake strand) Grassy clearing habitat 



Shore habitat (Pine dune habitat) 



Reed marsh habitat Open hardwood forest habitat 



Sedge marsh habitat Oak dune forest habitat 



Sand-bar herbage habitat (Beech-maple forest habitat) 



Bare dry sand habitat Edificarian habitat 



Beach grass-cottonwood habitat 



Bunch grass habitat 



Upland forest margin thicket habitat 



Lowland forest margin thicket habitat 



Lowland forest habitat 



The pine dune and beech-maple forest habitats are not well 

 developed in this region and were but little studied. The lake 

 strand is not a true Orthopteran habitat, btit is included on 

 account of the large number of insects of this order found in 

 the beach drift. 



Till-: INLAND REGION 



The Orthoptera and Orthopteran habitats of the inland 

 region were studied chiefly in the vicinity of the Warren 

 Woods Preserve, situated about three miles north of Three 

 Oaks. This preserve contains about two hundred acres, of 

 which nearly half is in clearing and the rest mostly covered 

 with forest. 



The topography is nearly level, except for the moderately 

 broad valley of the Galien River, which cuts across the north- 

 ern forested portion of the preserve, and for a number of 

 ravines draining into it. Flood plains of moderate size occur 

 along the meandering course of the stream. 



On the flood plain a few small buttonbush swamps are 

 found, and along the margins of the river are a few freshly 

 formed mud-bars which have not yet become forested, but 

 most of the- flood plain area is covered with heavy forest. 

 The higher ground, except that in the clearing, is covered with 



