72 INSECTS INJURIOUS TO FOEESTS. 
Beetles of the family Pselaphidse are frequently found in decaying 
wood near termite nests, and some are known to be their guests. 
Adults of TmesipJiorus carinatus Say a were found in decaying wood 
in which colonies of Jlavipes were present at Falls Church on March 
18, 1912. Mr. E. A. Schwarz has included this species in his list of 
myrmecophilous beetles as " often found among ants of various spe- 
cies." b Adults of Batrisus virginise Casey a were found in decaying 
wood infested with virginicus on the same day. 
Adults of the staphylinid, PTiilotermes pennsylvanicus Kraatz a were 
collected with Jlavipes near Kane, 111., August 11, 1911, in the butt 
of a decaying white cedar telegraph pole. The species is a true 
inquiline, and the beetles are very active. On August 16, 1913, near 
Chain Bridge, Va., an adult of PTiilotermes sp. (possibly Juchsii 
Kraatz) (determined by Mr. H. S. Barber of the Bureau of Entomology) 
was found in a colony of virginicus. Blatchley c records PTiilotermes 
pilosus Kraatz and P. fuclisii Kraatz in the nests of Jlavipes in 
Indiana. 
PARASITES. 
Termites are infested externally with mites and internally with 
protozoan parasites, but no internal or external feeding insect para- 
sites have been recorded by Leidy/ Grassi, 6 or Porter/ Grassi 
states that the presence of these protozoa in the intestine retards sex- 
ual development, as evidenced in the case of workers and soldiers. 
He further states that they are normally absent in the reproductive 
forms and newly hatched larvae. 
SUMMARY AND CONCLUSIONS BASED ON THE RESULTS OF 
THE EXPERIMENTS. 
The following conclusions are based on observations of colonies in 
the termitarium, colonies in small tin boxes, and other colonies in 
the forest at Falls Church. 
Colonizing individuals of both sexes swarm together from colonies 
of Leucotermes Jlavipes and L. virginicus from about 11 a. m. to 1 
p. m., the length of time occupied by the adults in emerging being 
about one hour. No evidence of the separate swarming of the sexes 
a Identified by Mr. E. A. Schwarz. 
& Schwarz, E. A. Myrmecophilous Coleoptera, found in temperate North America, 
Proc. Ent. Soc. Wash., v. 1, No. 4, p. 237-247, May 15, 1890. 
c Blatchley, W. S. The Coleoptera or beetles of Indiana, p. 343-344, Indianapolis, 
1910. 
d Leidy, J. On intestinal parasites of Termes Jlavipes. Proc. Acad. Nat. Sci. 
Phila. [v. 29] for 1877, p. 146-149, June 26, 1877. 
Leidy, J. The parasites of the termites. Jour. Acad. Nat. Sci. Phila., ser. 2, v. 8, 
p. 425-447, pis. 51-52, February, 1881. 
e Grassi, B., and Sandias, A. Op. cit., p. 11-13. 
/Porter, J. F. Trichonympha and other parasites of Termes Jlavipes. Bui. Mus. 
Comp. Zool., v. 31, no. 3, p. 45-68, pis. 6, October, 1897. 
