Article beginning on page 279.
Psyche 7:279-280, 1894.

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PSYCHE.
NOTES ON THE WINTER INSECT FAUNA OF VIGO COUNTY, INDIANA.- 111.
BY W, S. HLATCHLEY, INDIANAPOLIS, IND.
39, Lygus &atensis Linn. Very
common in both summer and winter.
In the latter season it is found in
numbers beneath and between the
radical leaves of every mullein plmt.
The species varies greatly with the
season, and the winter form may be
flavo-maculatus Prov.
40, Callic@ms histrio Rent. A
southern insect, but two specimens
of which have been taken in Indima.
They were found beneath the bark of
a black oak (^uerc?ts cocci'nea tine-
toria Gray) log which Jay on the
side of a high sandy hill near the
Wabash River. Feb 19, 1893,
41, Anthocoyis musculus Say. An
iincommon species in winter, when
it is found beneath the bark of willow
trees.
42, Acanthia lectularia Linn. The
festive bed-bug " -found in all stages
in its usual abiding places.
43, Piesma. cinemu Say. Common ;
gregarious. Hibernates beneath the
bark near the bases of red and hhick
oaks, and beneath logs on sandy hill-
sides.
44, Coryihztcu ciliato Say. Fre-
quent in winter beneath the loose bark
of the sycamore (Platanus occidentu-
Us L.) and beneath logs and rubbish
near them. Gregarious.
43, A d u s rohustm Uhler. Scarce.
Hibenates beneath the bark of red and
black oaks. Feb. 15, 1891.
46, Arudus sirnilis Say. Rare.
Two mature specimens were taken
from beneath an oak log, March 16,
1891. The species, therelbre, certainly
hibernates either as nymph or imago.
47, Aradus crenatus Say. Wintci s
in all stages beneath logs and chunks
whose sides arc deeply buried in sand
and mold. Our largest species of the
genus.
48, Arudus ame&canus 1-1. Schf.
Rare. Two were taken from beneath
a. log on a sandy hillside, Feb. iì
1893. This species is not listed in




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280 PSYCHE. [September 1895.
Uhler's catalogue, but it was so named
for me by Mr. Uhler.
49, Aradus sf. ? Rare. One imago
and two nymphs of this unidentified
species were taken from beneath some
oak chips on a sandy hillside, Jan. I,
1893.
50, Brachyrhynchus lohatus Say.
Rare. One specimen from beneath
the bark of an elm log, Dec. 16, 1892.
5 I, Brackyrhynchus simpler Uhler.
Our most common member of the
family. Winters in all stages beneath
the bark of red oak logs. Gregarious.
52, Cor'iscus ferus Lii111. A common
winter resident beneath logs and leaves
of mullein along roadsides and the
borders of dry upland fields.
53, Coriscus functipes Reut. Scarce
in winter. Several were found with
ferus beneath chunks in the sandy
bed of the old Wabash and Erie
Canal, Jan. I, 1893.
54, Coriscus sp. ? Rare. Two were
taken from beneath a log partly buried
in the sand near the border of a pond,
on Jan. I, 1393. Uliler returned them
marked, new to me."
55, Sirthenea carinata Fab.
Another southern form but three of
which have been taken by myself in
this State. One of these was found
beneath a log partly buried in low
wet ground on Feb. 21, 1892. The
others in similar localities in April.
56, Melanolestes fic+es 11. Schf.
Rather common in winter, singly or
in pairs, in dry upland woods beneath
logs whose sides are deeply buried in
leaves and mold. Experience has
taught me that this " bug" can inflict
a severe wound with its beak when
handled carelessly.
57, Melanolestes abdo?~zinaIis 11.
Schf. Much less common than the
preceding. Hibernates in similar
places. Dec. 18-Jan. 1 I.
58, Opsicoetus personatus Linn.
The nymphs only, with body very
thin and covered with an acci~mula-
tion of dust, have been taken in houses
in winter. They reach maturity about
June 10 when they fly into houses
in the early evening, attracted by the
lights.
59, Pygolamfis pectoralis Say.
Quite frequent in winter both as
nymphs and adults. Found singly or
in pairs beneath chunks and boards,
along roadsides and borders of upland
woods.
60, Oncerotrachelus acuminates
Say. Common. Often as many as
50 are found hibernating beneath one
chunk or log; preferably those of
damp localities.
EMESIDAE.
61, Barce annuZ+es Stil. Un-
common. Taken on three different
occasions in winter from beneath
pieces of rails along the border of a
cultivated upland field. A pair were
found in copulation, Nov. 20, 1892.




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62, HydrotrecJius renzig'us Say.
Frequent. Hibernates beneath logs
and piles of drift along the border of
streams. Sometimes seen warm days
in latter part of February on the
surface of the water.
63, LimnotrecJins marg'inatus Say.
Frequent. All that I have found in
winter were beneath logs on hillsides,
zoo yards or more from water.
64, Limno$orus ru foscutellatits
Lat. This species, abundant on the
lakes of northern Indiana, has been
found only in small numbers on a
large pond in Vigo Co. Two living
specimens were found beneath a pile
of drift near the border of Hie pond
on Jan. I, 1893.
The species of Zaitha, Belostoma,
Ranatra, and, perhaps, Notonecta,
presumably pass the winter as nymphs,
inhabiting the mud in the bottoms of
ponds and streams; but as I have
taken none of them at that seahon they
are not incorporated with the above
list of winter Heteroptesa, which
includes only such species as I have
actually found hibernating'.
SOME HABITS OF FORMICA OBSCURIPES FOREL, WITH NOTES ON SOME INSECTS FOUND ASSOCIATED WITH IT. BY GEORGE B. KING, LAWRENCE, MASS.
It is generally believed and is also
stated by the majority of writers upon
the habits of ants, that in such clin~ates as "we have in our northern States and
Canada, the ants just before the ground
begins to freeze go down into their bur- rows below the freezing point, and re-
main there until the approach of spring, when they ascend again, attend to their
accustomed avocations, and repair their
nests.
To satisfy myself as to whether or
not this were true, I last year located
and marked three of the mounds in
which this ant lives ; they were several miles apart. On November 25 at 3
P. M. I went with my so11 to' nest no. I. The temperature of the air was 38', the
snow which had fallen on the most~ing
previous had nearly disappeared, and
it was gradually growing colder. We
removed some of the earth from the top
of the nest, and fit the depth of six
inches we found plenty of ants. They
were in a sluggish condition and appar-
ently asleep and when disturbed could
barely move about. We continued
digging down to the depth of two and
one-half feet and found ants huddled
together in little piles all through the nest. I took the temperature at this
depth, 33' F. The ground froze the
following night and remained frozen all
wintei. We collected 177 of the ants,
and brought them home to look for
winter parasites on ants. I found 8




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