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large, they are soon filled to such an extent that the oncoming hordes 
soon are enabled to cross over on the bodies of the unfortunate leaders 
that reached the stream first. It has never been my fortune to see a 
swarm of these insects crossing anything larger than a small irrigating 
ditch, hence it is a difficult matter for me to accurately describe one of 
these crossings. They are also said to be capable of being driven "just 
like a drove of sheep" when they have stopped to feed; and at such 
times are often " herded" off gardens and fields of grain. 
LOCUST INJURIES IN OTHER REGIONS DURING THE SUMMER OF 1891. 
Before closing this report it might be well to refer to such other locust 
depredations occurring during the summer as have directly or indi- 
rectly come to my notice. Of course, these were most of them quite 
local and limited in their extent, and were occasioned by local non-mi- 
gratory species. Taking them at random rather than in accordance with 
their magnitude or importance they can be briefly stated as follows : 
A region of considerable extent in southwestern Kansas was overrun 
to some extent by the large yellow locust known as Melanophis differ - 
entiaUs and several other species in fewer numbers. These mostly dam- 
aged the alfalfa and materially lessened the hay crop of that region. 
Professor Osborn, of the Iowa Agricultural College, who visited the 
region by your request, has already given a full account of this out- 
break in a paper read before the meeting of official Economic Ento- 
mologists, held in Washington during the month of August. Hence, I 
will merely refer to it here. 
Farther south and west, in New Mexico and Arizona, locusts were re- 
ported as being very numerous and moving eastward. It was claimed 
in the reports that the damage being done here was chiefly to the 
grasses on the range. Just what species ot 'hoppers were engaged in 
these injuries, and how extensive they were, could not be learned at 
the time. Possibly it may have been the Long- winged Locust which also 
occurred in Colorado and did like injury there. At any rate the men- 
tion of their " moving in droves while yet unfledged" would be quite 
characteristic of the Dissosteira longipennis. Letters received from 
Professor Townsend, of the New Mexico Agricultural College, quite re- 
cently, throw a little light upon some of the locust injuries wrought in 
that particular region during the year. He states that the Acrid Hum 
shoshone and a species of Melanoplus have been numerous during the 
past summer and were the cause of some slight injury to certain crops 
and wild plants. The Acridium shoshone worked on the Mesquite and 
other shurbs and trees, while the Melanoplus, which was probably the 
differ entiaUs, attacked and slightly injured the vine. 
Reports also reached us here in Nebraska that there were locust depre- 
dations being committed in portions of Texas. These reports were 
found in the columns of the daily newspapers. Just how extensive 
and at what particular point these injuries occurred in that State I 
