a 
THE ROCKY MOUNTAIN LOCUST IN 1882. 9 
when the locusts struck the northwest corner of the field as they came 
from that direction with a northwest wind, they drifted by to the west, 
avoiding all that portion of the field to the leeward of the sugar-cane 
and broom-corn, but taking everything clean diagonally across where 
the field was unprotected by these two plants; the supposition being 
that the wind in passing over these plants carried with it something 
offensive either to the sense of scent or taste of the locust. The wild 
grasses of the genus Sorghum, of which several varieties occur in the 
West, are also shunned by this insect. 
Mr. Talbot also claimed that quite a number of young locusts had 
hatched and were now hatching in the hills lying to the east and north 
of Sioux City. 
Had not much time or would have gone out and examined them to 
see whether or not they were C. spretus. 
Bismarck, Dak., June 24.—To-day we were out on the hills in the 
vicinity of the city, and found some C. spretus, mostly all fledged and 
in healthy condition; a few other species, as C. occidentalis, Hippiscus 
coralipes, Stenobothrus, &c. C. spretus is quite common but not numer- 
ous; no damage anticipated. 
Between Bismarck and Fort Buford, at various wood-stations, C. 
spretus and other Caloptenus larve and pup were noticed, but nowhere 
in great numbers. At Fort Buford, June 29 and 30; young locusts of 
numerous species quite plentiful in the hills and flat lying to the north 
and northwest of the post. C. spretus most numerous where vegetation 
is rankest. 
Geometrid larvze found ona wild gooseberry bush in hills north of 
here.t. Yucea moths (Pronuba yuccasella Riley) quite abundant on blos- 
soms of Y. angustifolia; also several species of ants that appear to con- 
gregate for sweets exuded by plant. None of latter saved. 
Some Meloidz found on the blossoms of sunflower and thistle.2 Also 
one species of Bee-fly.2 Latter quite common though not abundant. 
Lepidoptera quite scarce. Only a few diurnals noticed, chiefly Pyra- 
meis huntera. 
June 30.—Collected, on low grounds near the river, some Cleridz on 
flowers. Also some Hymenoptera from weeds, where they were appar- 
ently for the purpose of destroying insects. Caloptenus bivittatus quite 
common, and even numerous at some places on the bottom lands where 
they feed upon rank vegetation, weeds, &c., just as they do in Nebraska 
and Lowa. 
Mosquitoes numerous enough to interfere with work; very ravenous 
in the attack. Old settlers, however, mind them but little. 
Fort Buford, July 1.—Were in hills north of here, and found some 
interesting Cicindelide among ravines in bad-lands, quite numerous 
1 Bufitchia ribearia (Fitch). 
° Epicauta sericans Lec. and £. callosa Lec. 
’ Species of Systoechus and Triodites. 
