ow 8 in 



















the larvae or work of the larvae should be sent to Sioux City for examination. 
The Mississippi valley may be the eastern limit of its range, but this is not 
definitely known. It has recently been found as far south as Charleston, Mo., and 
occurs practically everywhere throughout the west. Although throughout the more 
southern portion of the middle west it is rare and difficult to find, 
. Address 0. N. Ainslie, 5205 Morningside Ave., Sioux City, Iowa. 
ALL ENTOMOLOGY EMPLOYEES TO COOPERATE WITH THE BUREAU LIBRARIAN. 
In connection with the special work of entomologists brought about through 
war conditions it is noted that considerable material of ephemeral nature is 
appearing, both Federal and State, short letters, press notices, leaflets, cir- 
culars, posters etc. This, while of little permanent value, will have a certain 
historic interest later. The Bureau library will undoubtedly secure some of it 
through the regular channels but much also may be missed. It is requested there- 
fore that those in charge of branches of the Bureau or of Bureau field stations 
will occasionally send to the library copies of such of this material as may have 
come to their notice and may have proven of special service at this time. 
Dr. Howard and one or two members of the Bureau have recently adopted the 
“system of filing in the Bureau library, temporarily, personal copies of current 
mumbers of general scientific periodicals and other publications of general 
interest. While most of these publications may be found in the Department library, 
and they may also be called over to the Bureau upon special request, it is often 
quite a convenience to have them coming to the Bureau direct and in the case of the 
more popular scientific magazines which are in great demand we frequently see 
‘them more quickly than when they are called for through the Main Library. The 
dibrarian will be glad to have loans from those interested. All such loans will 
‘be returned to the owner within a month unless otherwise specified. 
The librarian wishes to thank all those who have sent in separates for 
recording and filing. Please continue the attention. 
DO NOT FORGET TO LIST ON YOUR INVENTORIES ALL BOOKS BELONGING TO THE DEPARTMENT 
LIBRARIES OR TO THE BUREAU LIBRARY. 
INSECT MATERIAL WANTED. 
Bir The following live insect material is especially requested by the West 
‘LaFayette, (Ind.) laboratory: 
Lachnosterna adults and larvae from every section of the United States. 
Tiphia and Elis cocoons and predaceous enemies of white grubs, such as 
Asilid larvae. 
Cutworms, especially injuring cereal and forage crops. 
Complete details, shipping boxes, etc., will be furnished on request. 
Records of collections, parasites etc., will always be returned to the sender. 
Address J. J. Davis, Box No. 95, West LaFayette, Indiana. 
THE OFFICIAL BULLETIN. 
On April 14, 1917, the President of the United States signed an Executive 
Order, creating the Official Bulletin. This bulletin is designed to furnish first- 
hand, authentic information, daily, pertaining to all matters of National defense, 
