12 INSECTS INJURIOUS TO FORESTS. 
Beetles of the family Pselaphidez are frequently found in decaying 
wood near termite nests, and some are known to be their guests. 
Adults of Tmesiphorus carinatus Say * were found in decaying wood 
in which colonies of flavipes 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.’ > Adults of Batrisus virginiz Casey * were found in decaying 
wood infested with virginicus on the same day. 
Adults of the staphylinid, Philotermes pennsylvanicus Kraitz® were 
collected with flavipes near Kane, Ill., 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 Philotermes sp. (possibly fuchsi 
Kraiitz) (determined by Mr. H.8. Barber of the Bureau of Entomology) 
was found in a colony of virginicus. Blatchley ° records Philotermes 
pilosus Kraaitz and P. fuchsii Kraitz in the nests of flavipes 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, 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 larve. 
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 flavipes 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 dentified by Mr. E. A. Schwarz. 
b Schwarz, E.A. Myrmecophilous Coleoptera, found in temperate North America, 
Proc. Ent. Soc. Wash., v. 1, No. 4, p. 237-247, May 15, 1890. 
¢ Blatchley, W. 8. The Coleoptera or beetles of Indiana, p. 343-344, Indianapolis, 
1910. 
d\eidy, J. On intestinal parasites of Termes flavipes. 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, pls. 51-52, February, 1881. 
e Grassi, B., and Sandias, A. Op. cit., p. 11-13. 
f Porter, J. F. Trichonympha and other parasites of Termes flavipes. Bul. Mus. 
Comp. Zool., v. 31, no. 3, p. 45-68, pls. 6, October, 1897. 
