239.. 
multigraph circular E-310, The value of this service to the surgeons 
and laboratory technicians is indicated by the fact that one issue of 
1,000 copies has already been exhausted, for the most part in meeting 
Special requests, anda new. issue with several additions is now being 
prepared, It includes citations of articles from the United States, 
Canada, Mexico, Cuba, Brazil, Chili, Peru, France, Germany, Switzer- 
_itand, Spain, Hungary, Morocco, and Sudan. A copy will be mailed upon 
wreguest. 
As indicated in the January 1934 Monthly Letter, the discovery by 
H, C, Cushing, Menard, Tex., and W. S. Patton, Liverpool, Eng., that 
two species of flies are involved in what has been so far considered 
the screwworm fly (Cochliomyia macellaria) has necessitated an ine 
vestigation of the biology, habits, and distribution of the two forms 
(C. macellaria Fab. and C. americana Cushing and Patton). Mr. Cushing 
is now established in field headquarters at Sonora, Tex., and will 
give his attention principally to an intensive study of the biologies 
of the two species. Various other field laboratories will participate 
in the investigation by studies and observations on habits and distri- 
“bution. Sg 
. IDENTIFICATION AND CLASSIFICATION OF INSECTS 
E, A. Chapin, Washington, D. C., has detected a recently described 
species of Tribolium, T. destructor Uytt., among the Bureau's undeter-— 
mined material of this genus. The specimens were intercepted (F HB 
90623) in a shipment of seeds from Ernst Benary, of Erfurt, Germany. 
It is of interest to note that the species was described from specimens 
taken in another establishment in Erfurt, the original home of the 
species being at present unknown. The particular seed involved in 
the present case was Ampelopsis quinquefolia (L.). The species appears 
to be a serious pest in the seed houses at Erfurt. 
Fidel del Rosario, of the Philippine Bureau of Science, holder of 
a Rockefeller Foundation Fellowship, is working in the Division of 
Insects at the National Museum on a study of the dipterous cenus 
Psychoda. Mr. del Rosario has studied at Cornell: and is now @eing 
advanced work at Johns Hopkins University under Dr. F. M. Root. 
G. Stuart Walley, of the Canadian Department. of Agriculture, spent 
about 3 weeks in April in the Division of Insects studying Ichneumon- 
idae with R. A. Cushman. He brought with hin, for presentation to the 
National Museum, five paratypes and a number of specimens compared by 
him with types in the Canadian national. collection. The majority of 
these are of species describec by Viereck:in his "A Preliminary Revision 
of the Campopleginae in the Canadian National Collection" and "A Pre- 
liminary Revision of Some Charopsinae, a Subfamily of Ichneumonoidea 
or Ichneumon Flies", while the rest are species.of Provancher, Harring- 
ton, and Walley. 
