214 Transactions of the Academy of Science of St. Louis 
Both colonies were under loose bark in depressions made 
by other insects; in the one case they used the old galleries of 
a Camponotus carpenter ant, and in the other case a pocket made 
by a rodent. In the one colony I found a few small batches 
of eggs but no larvae; in the other a few small larvae but no 
eggs. The ants had adopted the logs as a home and were 
probably preparing to stay there although in the tropics members 
of this genus are on the march almost constantly. 
Prenolepis imparis (Say) [M. R. Smith] 
n February 28, 1932, an unusually warm day with the 
temperature at 65 to 70 degrees F., between 1 and 3 p. m., the 
air over a small trickle of water from a spring at Creve Couer 
Lake, Mo., was thick with these winged ants. Thousands would 
fall into the water and accumulate in masses and were helpless 
to extricate themselves. The oe taken were all males. 
Elsewhere the same day in the same region many winged and 
w Se ants were taken from e ground and ape oo 
. M. R. Smith as P. wmnparis var. testacea Eme 
Monomorium minimum (Buckley) [M. R. Serith | 
Thousands of these ants came to a piece of raw beef and 
also to honey ee for bees in my yard at Kirkwood, Mo., on 
June 15, and 18, 1932 
Iridomyremex pruinosus var. analis 
(Andre) [M. R. Smith] 
At St. Albans, Mo., on the Sandy Shore above Missouri 
River, on May 6, 1932, a very dry log sheltered under its bank 
a nest of this species. 
Solenopsis molesta (Say) [M. R. Smith] 
Many of these tiny ants were feeding on the dead body of 
a queen wasp, Vespa germanica, at Kirkwood, Mo., June 24, 
1932. I wondered how these very tiny ants could penetrate the 
thick care: of the wasp, but soon found an entrance hole where 
n had been bitten out; the colony was shaken into a vial 
from is opening. These ants have been seen hereabouts on 
several occasions but their very small size made capture difficult. 
Camponotus (Myrmentoma) caryea var. 
(Fitch) [Wm. M. Wheeler] 
A swarm of these ants was coming out of the burrow belong- 
ing to the carpenter bee, Xylocopa virginica. This nest was in 
a horizontal board of pine that I had harbored and watched 
for 13 years but this is the first time that this ant had even been 
seen about it. They had a nest in this burrow and the swarm- 
ing behavior was observed on April 30, 1930; several of the 
