io i a 4 oe 
NOTE TO FIELD MEN. 








yf new and interesting items, facts, devices or pertinent discoveries, the 
y Letter has, in the past, proved its value, and the hearty cooperation of the 
force, each month, through their respective offices, is solicited. 

WANTED: RECORDS OF PREDACEOUS HEMIPTERA,. 
zg established, the intention being to keep on file all records of attack by 
pterons upon piles insects in their various stages. The index will be available 
nyone preparing manuscripts, parts of which deal with insect enemies. The com-~ 
éness of such a file can be greatly increased by field men sending 
oo or observations of attacks. Such records should include the name 
a6 predator, whenever possible, and the species preyed upon and in what stage. 
lity and date of observation should also be given, and accompanying specimens 
d be appreciated. All records should be sent to E. H. Gibson, Divi- 
on of Insects, U. S$. National Museum. 
LIST OF THE PUBLICATIONS GF THE BUREAU OF ENTOMOLOGY 
OM JULY 1, TO DECEMBER 31, 1916. 
BULLETINS, NEW SERIES: 
Contents and Index +9 Bulletin No. 94. 
a e o in 98. 
" w a ° $9, 
POG eos Ee eee. 109. 
(The above indexes complete the bulletins, new series.) 
BULLETINS, TECHNICAL SERIES, 
Contents and Index to Technical Series No. 19. 
The following are in the course of preparation: 
Contents and Indexes to Technical Series Nos. 16, 17, 20. 
(The issuance of these will complets the Technical Series.) 
JOURNAL OF AGRICULTURAL RESEARCH. 
$8, The California green lacewing fy. , 
9, The larval characters and distribution ef two spe of Diatrasa. 
» Contributions to a knowledge of the life history of the armyworm. 
. Thersilochus conotracheli, a parasite of the plum curculio, 
An important Dipterous enemy of plant~- lice, Aphido ates meridionalis, 
pea. card index of the predaceous species of Hemiptera, especially Heteroptera, is 
