| S. M. Dohanian, who is making a study of parasites of the Euro- 
pean corn borer at Arlington, Mass., reports: "Phaeogenes sp. from Japan 
were received in a test Shipment. Forty-two live adults were secured 
frem 120 Pyrausta nubilalis pupae and 39 were liberated. Phaeogenes 
-higridens from Italy were also received. More than 5,000 adults have 
been secured and liberated from a shipment containing 1,074 adults and 
7,500 P. nubilalis pupae. Paratheresia claripalpis V. d. Wulp, adexiid 
parasitic on the sugarcane moth in Peru, produced 1,476 adults from the 
5,000 puparia received. One thousand one hundred and sixty-three of 
these adults were liberated in Saugus, Mass., as a field test. The re- 
mainder were utilized in laboratory tests using P. nubilalis, a variety 
of host plants, and various native larvae with no success." 

A considerable increase in parasitism in Saugus, Mass., by in- 
troduced species is reported by R. A. Biron, who says: "Bulk collections 
indicate better than 7,000 parasites per acre in corn compared to slight- 
ly over 1,000 as reported last year." Most of these were the fly Masi- 
cera senilis Rond., and the wasp Inareolata punctoria Roman. 
At the Monroe, Mich., sublaboratory, W. A. Baker and E. W. Beck 
have completed laboratory studies conducted to determine which borer in- 
stars will support Masicera senilis larvae. The percentage of parasitism 
that may be obtained increases with cach successive instar from the 
second to the fifth, and then there is a slight decrease. There is also 
a direct relation between the size of the borer (host) and the size of 
the puparium obtained, full fed and hibernating borers producing the 
largest (puparia). ; 
C. A. Clark, Kobe, Japan, makes the following report on the 
introduction of parasites of the European corn borer: "Test shipments 
of 320 Cremastus hymeniae Vier. were made to the Arlington laboratory 
on July 4. These were sent in the cocoon stage with provision for emer— 
gence of adult parasites en route. A part of these were sent in cold 
storage to Seattle (Wash.) and received and forwarded from there through 
the cooperation of A. G. Webb of the Plant Quarantine and Control Admin-— 
istration. On July 31, a test shipment of 120 Phaeogenes sp. in the lar- 
val and prepupal stages was made via Seattle. Provision was made for em— 
ergence of adult parasites en route. On the same day a test shipment of 
400 field-collected corn borer pupae containing this pupal parasite was 
made to Boston (Mass.), via the Suez Canal. Some specimens of corn borer 
parasites obtained from Formosa were sent to Arlington (Mass.) for de- 
termination." 
J. C. Frankenfeld, Tempe, Ariz., who, earlier in the summer, 
collected eggs of the range caterpillar (Hemileuca oliviae Ckll.) for the 
purpose of making a count of the current percentage of parasitism, re- 
ports that "five series of tests have been completed on the effect ofthe 
stage of development of host eggs upon parasitism, all of which demon-— 
strate conclusively that Anastatus semiflavidus Gahan will parasitize 
host eggs which contain fully developed larvae without impairing the vi- 
tality of the parasites." He also reports that "the period of incubation 
of the parasites at 85° F. is the same for all stages of host egg de- 
velopment. * * * Range caterpillar eggs frozen in a block of ice for 30 
days maintained their viability and Anastatus semiflavidus females ovi- 
posited readily in such host eggs and the resulting parasites developed 
and emerged normally." 
