BUREAU OF ENTOMOLOGY AND PLANT QUARANTINE 97 
containing type material of nearly 1.300 species, was acquired 
through joint purchase by this Bureau and the National Museum. 
In addition to the research involved in insect identification, definite 
advances were made on the large number of assigned problems 
relating to the classification of various insect groups. Thirty-two 
manuscripts were completed and submitted for publication, including 
various larger revisional studies. Among these are revisions of the 
bark beetle genera Ps&udohyUsinus and Hylastes, a monographic 
treatment of the Protura of North America, a study of ant parasites 
of the family Eucharidae, a revision of the grasshoppers of the genus 
Orphulella, a classification of the scale insects of the genus Asterole- 
canium, and a revision of the wasps comprising the genus Try- 
pox-ylon. Near completion at the end of the year were a number 
of other large and important papers, including a revision of the 
economically important fruitfiy genus Anasirepha, a monographic 
study on the blowflies comprising the family Calliphoridae, a classi- 
fication of the raspberry fruitworms of the genus Byturus, a revision 
of the numerous species of buprestid beetles comprising the tribe 
Chrysobothrini, a revision of the moths of the geometrid genus 
Ellopia, a type catalogue of the genera of bees of the world, a revision 
of the ehalcid parasites of the genus Monodontomerus, a classification 
of the North American fleas, and a large detailed morphological 
study on the male genitalia of the insect order Hymenoptera. Sub- 
stantial progress was also made on numerous other studies that are 
somewhat narrower in scope. 
FOREIGN PARASITE INTRODUCTION 
The foreign investigations upon the natural enemies of crop pests 
were continued throughout the year at the Yokohama, Japan, field 
station, but that at St. Cloud, France, was discontinued in October 
1939 because of war conditions. Two members of the staff of this 
station were then assigned to work in South America, with head- 
quarters at Montevideo, Uruguay. The new Parasite Receiving 
Station at Hoboken, N. J., was completed and occupied in June 1940 
and the staff of the Moorestown, N. J., station has been assigned to 
it. Up-to-date facilities are now available for the quarantine of all 
types of shipments of foreign origin. All such shipments will be 
received there and any hyperparasites or living host material will be 
eliminated before the parasite stocks are transmitted to the various 
field stations of the Bureau for rearing and colonization. 
PARASITES OF CEREAL AND FORAGE INSECTS 
Contemplated importations of parasites of the European corn 
borer and the hessian fly from France during the fall of 1939 were 
prevented by the outbreak of the European war. A single shipment 
of Triaspis thoracicus (Curt.), a parasite of the vetch bruchid, was 
forwarded and yielded 8,849 adults, of which 5,210 were forwarded 
to field stations for rearing and colonization. Laboratory rearing 
at the receiving station provided an additional 7,318 adults for 
colonization later in the year. 
During the last half of the year an extended survey was made of 
the white-fringed beetle in Chile. Localized infestations of sufficient 
extent to cause crop injury were found in several southern localities. 
267756—40 7 
