=a tg 
. A. Back spent the month of October in the field. 
td 
TY se 
on official business. 
R. T. Cotton spent several days during December at Orlando, Fla., 
training under 
sn reappointed 
Mrs. -Sibyl Betts Svwegman, after a perioi of adven 
Brodel, the well-known illustrator of Johns Honkins, hi 
as artist. 
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@ et 
J. C. Bridwell, formerly associated with this office and recently con 
timing his work uvon the classification of Bruchidae, ale baat: a position 
at Columbia University as Lecturer in Extension Entomology 
EH. A. Back was seubpoened to appear on February ig and 19 as e witness 
in the Superior Court of Baisimore in connection with an explosion occurring 
on board a grain boat during August, 1923, following the application of 
carbon disulphide. \ 
MISCELIANEOUS INVESTIGATIONS — 
(Items from the National Museum contribcted by S. A. Rohwer) 
The Museum has recently regen 79 specimens of Palearctic cynipids in 
exchange with the Zoological Museum, Vienna, Austrie. This exchange has been 
arranged through the Sees Gorter of L. H. Weld and the kindness of Dr. Franz 
Maidl. Most of the material comes from the Mayr collection. 
Carl Heinrich will leave Washington on March 2 for a month's trip to 
study types of Microlepidoptera and to consult various specialists. He Ox 
pects to go to the American Iuseum of Natural History, the Museum of Compare= 
tive aoe the National Museum of Canada, and also to visit the collections 
of Dr. Barnes, Decatur, Ill., and Miss Braun at Cincinnati. 
Included in the material recenti: received by the Museum for Dr. Dyar's 
examination were four new species of mosquitoes from. Colombia. These were 
forwarded by Mr, Lavrence H. Dunn of the Rockefeller Institute, National 
Board of Health, who is at present working as an inspector in the campaign 
against the yellow fever epidemic in Colombia. B25 1 
2 William A, Hoffman, from the School of Public Health, Johns Honkins 
lea spent several days at the imseum in studying blood~sucking flies, 
Mir, Hoffman was especially interested in members of the genus Culicoides and 
related forms, 8 
The iwlational iisevm has recently received its first-lot of Diptera | 
from Greenland. This material was received as an ©3 xchange from the Zoological 
Museum in Denmark, and revresents 80 of the named flies from this island. 
Flies are the most abundant insects in the Par North, the order Diptera 
