otae 
the season to serve as food for larvae of Heliothis obsoleta and 
Heliothis virescens Fab. Both of these larvae feed on the green 
seed capsule of toadflax in the early spring. Moths of each species 
emerge from hibernation before any of the usually favoured cultivated 
plants are available as food for larvae. Many of the progeny of 
these moths feed on Linaria seed pods, passing through a first gen- 
eration of the year on this wild plant. Thus, this wild plant, 
usually very abundant from the last week of March until the first 
of June, serves to fill in a blank period as far as cultivated crops 
are concerned, and tides these insects over until more favored and 
cultivated plants are suitable and abundant in the field. lLinaria 
canadensis, while usually thought of as an unimportant weed, is thus 
found to be of considerable economic importance in the seasonal 
history and control of the injurious insects mentioned. 
Correction.--The species of Crotalaria mentioned on page 9 of 
the September 1933 Monthly Letter as C. spectabilis as attacked by 
the three-lined blister beetle (Epicauta lemniscata (Fab.)) should 
have been C. intermedia, The former species was not attacked. 
‘ COTTON INSECTS 
Committee surveys Division of Cotton Insects.6— The committee 
appointed by Mr. Strong to make a survey of the work of the Division 
of Cotton Insects consisted of W. E, Hinds of Louisiana, Z. P. Met- 
calf of North Carolina, S. Marcovitch of Tennessee, and M, S. Yeomans 
of Georgia. This committee met at Tallulah, La., on February 26 and 
spent 3 days in conferences with workers at that place. During the 
next 2 weeks the committee conferred with all station and project 
leaders and with practically every worker in the Division. The field 
stations at College Station, Port Lavaca, and Presidio, Tex., were 
visited in company with F, L. Thomas of the Texas Experiment Station. 
At Tucson, Ariz., besides conferring with this Bureau's workers, 
conferences were held with the officials connected with the State of 
Arizona and of the Bureau of Plant Quarantine. At Presidio two offi- 
Cial entomologists from Mexico and several of the Bureau of Plant 
Quarantine workers participated in the conference. The committee com- 
pleted its report at the San Antonio Office of the Bureau of Plant 
Quarantine. Four small stations of the Division were not visited 
but the committee conferred with the men in charge of each. F. F. 
Bondy, of Florence, S. C., met the committee at Tallulah, La.:; H. OC. 
Young, of Eufaula, Okla., met the committee at College Station, Tex.; 
T. C. Barber of Brownsville, Tex., was at Port Lavaca; and C. S. Rude, 
of Tlahualilo, Mex., was at Presidio. The 1/-page report submitted 
to Mr. Strong showed a thorough study of the work of the Division 
and contained helpful suggestions. 
