20 University of Michigan 



In the wetter localities the elm seems usually to be the dom- 

 inant tree, though basswood and ash are commonly associated 

 with it. The ground in these situations is of damp black muck, 

 often covered with a thick undergrowth of ferns and low 

 herbaceous vegetation. In many places these forests contain 

 maples and other trees, showing transition toward the climax 

 beech-maple forest. 



Three species of Tetrigids are the only Orthoptera which 

 were found in this habitat; Paratettix cucullatus (Burmeister) 

 and Acrydinm arenoswn angustum Hancock were taken on 

 muddy patches and among low herbage on moist ground in 

 the Galien River flood-plain, and a single specimen of Acry- 

 dinm grannlatitm Kirby was seen on a patch of moist mucky 

 soil in a swampy forest near Klute's lakes, but was not cap- 

 tured. 



Second groicfh upland forest habitat. In several places in 

 the cleared portion of the Warren Woods Preserve there are 

 small groves of second growth forest. All of these are heavily 

 pastured, and have scarcely any undergrowth; the ground 

 under them is in places worn bare by the trampling of the 

 cattle. A better example of this habitat occurs near the pre- 

 serve on a bank overlooking the Galien River flood-plain. It 

 consists of a thick stand of young oaks, maples, occasional 

 beeches, and scattered trees of other species, most of them 

 under four inches in diameter. The undergrowth is sparse, 

 consisting of a few herbaceous plants and small seedlings ; the 

 ground is well drained and dry, covered with dead leaves, and 

 strewn with fallen twigs and branches, with here and there a 

 large rotting log or stump. 



Ceiithophihis latens Scudder and Melanoplus viridipes Scud- 

 der are the only Orthoptera which were taken in this habitat. 



Oak dune forest habitat. Much of the dune area is covered 



