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MONTHLY LETTER OF THE BUREAU OF ENTOMOLOGY. 
U. S. DEPARTMENT OF AGRICULTURE. 




Number 12. April, 1915. 


CARNEGIE SCHOLARS. 
Mr. Carrington B. Williams, Carnegie scholar, took a trip to the West Indies in March and 
April and returned to Washington about April 8 with a very large collection of Thysanoptera 
made on the trip. On his return he worked night and day with Mr. J. D. Hood, of.the U. S. 
Biological Survey, describing the new species for a joint paper soon to be published. He visited 
Barbados, Trinidad, and Porto Rico and saw some tropical economic entomology. He sailed 
for England on April 17. a 
_ Mr. F. W. Dry, also a Carnegie scholar, is on a trip with Prof. Webster, visiting the eastern 
field stations of the section of Cereal and Forage Crop Insects. [L. O. Howard.] 
PUBLICATIONS OFFERED TO ENTOMOLOGISTS BY DR. FELT. 
‘Dr. E. Porter Felt, State Museum, Albany, N. Y., has written Dr. Howard, under date of 
April 8, stating that owing to a lack of storage space he wishes to dispose of a limited number 
of bulletins on hand among the entomological workers of this bureau. The available numbers 
are bulletins 20, 24, 36, 37, 46, 47, 68, 72, 136, 141, 147, 155, 156, and 165. 
Owing to limited funds, those who desire these publications must defray the cost of car- 
riage. [L. O. H.] 
AN INDEX TO ILLUSTRATIONS INCLUDED IN ALL PUBLICATIONS ON ENTOMOLOGY IN THE 
DEPARTMENT OF AGRICULTURE. 
It is not generally known that the editorial section maintains an up-to-date card index to 
the illustrations that are included in publications on entomology, embodying the U.S. Entomo- 
logical Commission, the late Division of Entomology, the Bureau of Entomology, and the later 
entomological papers of the Department of Agriculture. This index is open to members of the 
bureau on their visits to Washington at any time. 
A general card index of entomological publications having their inception in the above offices 
is in the course of preparation, and that part of it which pertains to the entomological 
bulletins of the Departmental series is now available for consultation, it being complete for all 
the entomological bulletins of this series thus far issued. [B. A. R.] 
ERRATA. 
In the January-February News Letter No. 10 the reference to Farmers’ Bulletin No. 650 
should have read ‘The San Jose Scale” instead of ‘‘San Juan Scale.”’ 
In the March News Letter No. 11 the reference to report No. 101 of the Secretary’s office 
should have read ‘“‘The Woolly Apple Aphis” by A. C. Baker, who is the author, and not by 
A. L. Quaintance and A. C. Baker. 
NOTES ON PREPARATION OF ACCOUNTS. 
Paragraph 90 (a to s), Fiscal Regulations, enumerates the different expenditures to be 
supported by subvouchers. Pages 50 to 52 of the Fiscal Regulations set forth the correct forms 
in which these vouchers must be made. ; 
Probably the two most common uses of the subvoucher are for the support of special con- 
veyances and hotel bills. It will be noted that a subvoucher in support of livery in excess of 
$1 (see par. 90 (g), Fiscal Regulations) must describe the service furnished and points 
93283—15 
