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TYPICiiL iiliVIP^NMLNTS IN" WHIOE COLLECTIONS WERE MADE 
Collections were made only in the most common grasshopper habitats in 
each district. These were: 
* 
1. Small grain « — V. ; heat, oats, rye, barley, 
2. Legumes . — alfalfa,, sweetclover, peas, 
3« Corn , 
4* F.lax« ■ 
5» Roadside , — Native grasses, Russian-thistle (S alsola p.estifer ), ragweed 
( AmbrosTa sp,) t wild lettuce ( Lactuca sp,), lambsquarters ( C henopodium 
sp,), sunflower ( Helianthus sp.), pigweed ( Ama ran thus sp,), gumweed 
( Grindelia squarrosa ) , sagebrush ( Art ernes i a sp.) 
6, Weedy patches . — Native grasses and the same weeds as in roe dside ;en~ 
vironments. 
7» Russian-thistle mats . — Mostly, pure stands, 
8, Plains grassland (native grasses of the open range ) . — Grama grass 
, ( Bouteloua gracilis ), buifalo grass ( Bulbilis dactyloides ) , western 
wheatgrass ( Agropyron sr^i thi i ) , western neediegrass jStipja comata ) , 
wiregrass ( Aristida longiseta ), nigger-wool ( Carex filifolis ), june- 
grass (Koeleria cristata) , 
* 
9« Low-mountain grassland . — Mostly grama grass ( Bouteloua gracilis ) with 
an abundant admixture of nigger-wool ( Carex filifoli e. ) and junegrass 
Koeleria cristata ) . 
10, Pasture grassland . — Fenced and smaller areas of native sod, surrounded 
by cropped fields. Here are found the native grasses of the plains 
grassland and also some of the tall prairie grasses, bluestem bunch 
grass ( ^ndropogon furcatu s), bluestem sod grass (A, scoparius ) , needle- 
grass ( Stipa spartea ) , and slender wheatgrass ( Agropyron tenerum ) , 
The greatest differences are between the cultivated crop environments 
and the grassland habitats. There were two reasons for considering the crops 
separately: First, the species of grasshoppers show distinct preferences for 
certain crops. By separating the crops important preferences are emphasized. 
Secondly, crops vary in their importance and abundance from one district to 
another. 
The grassland areas were divided into plains, low-mountain grasslands, 
and pasture grasslands. Plains and low-mountain grasslands include the open 
ranges and are kept separate because of their topography. The plains grass- 
lands occur in lower and more level regions, whereas the low-mountain grasslands 
are in the higher aid hilly regions. Pasture grassland consists of native 
sodlands, fenced into small units of less than 80 acres and surrounded by 
