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heavily infested with the tropical rat mite. 
BLACK WIDOW SPIDER ( Latrodectus mac tans F. ) 
North Carolina. B. H. Wilford (October 30): We found one female' in the 
basement of a' residence in Asheville. Another female was brought to 
the office for identification. There were far fewer calls concerning 
black widow spiders this summer than during the same period of 1936 • 
Nebraska. M. H. Swenk (October 20): Complaints of, and inquiries concerning, 
the black widow spider continued to be received during the entire period 
September 20 to October 20. ■ 
DOG , 
BROWN DOG TICK ( Rhipicephalus sanguinius Latr. ) 
Maryland. E. N. Cory (October 18): We have recently received a' report from 
Towson. One or two records each year for the past 4 or 5 years of in- 
vasion of homes by this southern tick. : 
Illinois. C. L. Metcalf (October 12): We have a report, accompanied by a 
specimen from Waukegan, of a dog heavily infested. 
SUCKING DOG LOUSE ( Linognathus piliferus Burm. ) 
Ohio. J. S. Houser (October 4): Specimens forwarded from Cleveland taken from 
a dog. , . . -. 
CATTLE 
SCREWWORM ( Cochliomyia americana C. & P.-) 
South Carolina. K. Dorward (October 23): Reduced numbers of cases were re- 
i ' ported during the month. For the week ended October 8 there were 94 new 
cases; by October 15 there were 72 new cases; and on October 23, 81 new 
cases were estimated in the State. The principal infestation continues to 
be in Colleton County. Single cases occurred in Lexington and Barnwell 
Counties, the most northern record of the season being 7 mile's east of 
Lexington. 
Georgia. R. A. Roberts (October 23): The greater infestation occurs in Seminole 
and Decatur Counties, also eest and south of a line of counties indicated 
by Grady, Colquitt, Tift, Telfair, and Emanuel. During the last 2 weeks 
a reduction of approximately 20 percent of the cases first occurred in 
the southeastern counties and was later in evidence in the southwestern 
counties. In the northeastern portion, in the vicinity of Bulloch and 
Emanuel Counties, cases continued with a high incidence. 
Florida. R. A. Roberts (October 23): Reports of 1,247 cases, including four 
representative counties in the State (Madison, Levy, Polk, and Glades) 
