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Part of Sioux County, June 17-July 2, 1911

extracted text

journeys, however, deserve mention.

_
49

Dr. Woleott and I made another
triy to Varbonnet on the afternoon
of July lst, to get one or two
vhotorraphs especially desired and
to bring in the instrument sta- _
tioned there. The day was cloudy
and dark, a most confusing light _
for photography, the "initial
factor" for exposure being so long
that I could not use my exposure
meter, and had to use my judement ia
instead. Cne of the photographs
taken was of the pits of the ant-
lions (the larvae of Myrmaleonidee), |
400 or 500 feet up the side of the © '
canyon and at the base of a sheer 4
eliff at least 100 feet high, the |
' shelter of which had led them to
_- adopt this odd site. Another
| photogreph shows the base of this
elif? and the steep slope leading
down from it. Still another shows —
the site of our instrument station
in the eanyon, on the bank of Var-









ee Se ee ms rae sil " RI wren

es

ee tas acenaee bonnet Creek, with a peculiar as-~-
so¢iation of elm, black bireh, and set Sine aspen. ‘

In addition to these long drives, we of course mece meny shorter trips
in various directions, individually oF sagem elo
in grouns of two or three, or occas- aS ie id
ionally the whole party. Dr. Woleott
and I generally went together on ac-
count of our common interests, and many
such trips will not be made the subject
of special notes, the results instead
showing up in our collections and
vhotogrevhs. A few of these little

: 4 ON
5
- ,

.

yt

On June 20th Dr. Woleott, Dawson
end I went out almost to Prairie Dog
Creek, the bad lands being our ob-
jective point; but I had the good
fortune to chance woon a colony of
tiger beetles - Sicindela cinetipennis
~ showing remarkable range of varia-—
tion, and forthwith we settled down
end spent our entire remaining time

collecting these specimens, each



CICFFE and Pa bus Slepe, Wrarwv ici ey a a