816 THE AMERICAN NATURALIST. [VoL. XXXIII. 
macropterous individuals only will be found among the grain, 
while the brachypterous ones will as uniformly remain in the 
timothy meadow. Among this race I have never been able to 
detect the slightest indication of a second brood. It is appar- 
ently much less affected by wet weather during the breeding 
season. This has also been observed by the late Dr. Lintner 
in New York. In the meadows the attack of Sporotrichium 
is much less marked, but in the insectary this has not proved 
true, thus indicating that the difference may be one of environ- 
ment rather than in the resistant power of the insect itself. In 
the Report of the U. S. Commissioner of Agriculture for 1887, 
Pl. I, Figs. 1-8, the brachypterous maritime form is shown as 
quite different both in form and color from those found inland. 
Mr. Schwarz has since stated in /wsect Life, Vol. VII, p. 420, 
that this difference in color was unreal, while Dr. Howard 
wrote me last summer that figures drawn from the material 
sent him from Ohio represented the maritime individuals much 
better than Fig. 8, in the plate, in the Commissioner’s Report 
above referred to; so that it would seem that the striking 
differences there indicated do not exist in fact. Mr. Van 
Duzee has called attention to a possible difference between 
specimens from New York and Kansas, the former seeming to 
be more hairy and robust than the latter, but he writes me 
that this may have been due more to the season than to the 
locality. 
The inland race has rarely been observed to depredate on 
timothy, and never in the manner followed by the Atlantic 
maritime race. It is two-brooded, and all members of the race 
macropterous, but inconfinement freely interbreeds with brachyp- 
terous individuals of the maritime race. In Ohio the latter 
occupies the north and northeastern portion of the state, while 
the inland race covers the western and southern portion. The 
only exception to this that I have observed is the finding of 
two brachypterous individuals in hibernation in southwestern 
Ohio, not far from the Ohio River. The maritime race might 
have been brought into southwestern Ohio, either by being 
washed into the upper Ohio River in the northeastern part of 
the state and, as with some other species, carried down stream 
