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' tI^s 
This is the third year in which collections have "been made in 
Texas during the adult survey, ' A* total o'f 732 Specimens were collected 
in 3 environments and 24 species were represented. So far as adults \ire,re 
concerned, M. differential is was the dominant grasshopper in the collections 
for the whole State, M. mexicanus , however, was the dominant species, in 2 
out of the 3 environments, although the number of specimens collected in 
small grain was too small to draw any accurate conclusion as -to the rela- 
tive abundance of the different spociers. There were many nymphs in the 
collections and these were most likely N. mexicanus , because the second , 
generation of this species was just in the nymphal stage at the time the 
collections were made. M, mexi ca nus has increased in its relative a- 
bundance over 1938, 
In areas where a second genera Sion of M, mexicanus occurs, the 
problem of control becomes compl.lcatei. Some observations xvhere siich 
phenomena occur have shown- that satisfactory baiting has been done for the 
first generation, but the fecundity of the females left often produced a 
second infestation equal to or greater than the first. 
In the north- central part of the State, infestations of M, mexi- 
canus are extremely localized in river and creek-bottom land. The xrorst 
infestations are in the Horthwestern Panhandle counties, but even here 
the situation is not serious. 
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