521- 
A THRIPS ( Limothrips cereal ium Haliday) 
Ohio. J. R. Heath (September 15 ): Swarms appeared in Grover Hill in 
July, so numerous that they covered the woodwork. (Det. by S’. Andre.) 
AMERICAN DOG TICK ( Dermacentor variabilis Say) 
Massachusetts. C. N. Smith (August 3l) ; Adults continued to decline 
rapidly in numbers on Martha's Vineyard during August, completely 
disappearing in many localities, while only a few were found in 
the most heavily infested areas. Immature stages increased in 
numbers during the month. 
PACIFIC COAST TICK ( Dermacentor occidentalis Neum. ) 
Arizona. C. D. Lebert (September 25): Many roports of dog ticks, 
especially during August and September. The tick most frequently 
observed is believed to be D. occidentalis . 
DROWN DOG TICK ( Rhipicephalus sanguineus Latr.) 
Maryland. E. N. Cory (August 28): Found in house at Baltimore. 
Illinois. P. C. Stone (September 26): Infestation on a dog at Elm- 
wood Park on September 20. 
A MITE ( Trombidium magnif icum Lee.) 
Arizona.. C. D. Lebert (September 25) : Observed in great numbers on 
the desert north of Phoenix on September 7 » following the heavy rains. 
CATTLE 
SCREWWORM ( Cochliomyia americana C. & P.) 
Georgia. T. Thompson (September 23 ): Farmers in Thomas, Colquitt, 
Worth, Mitchell, and Grady Counties, southern Georgia, report out- 
break as severe and unabated from last month. 
Alabama. J. M. Robinson (September 20): Screwworms and false screwworms 
(C. macollaria F.) reported as attacking a calf at Selma, on August 29. 
Texas. D. C. Parman (August 31)* ^ha number of true screwworms was 
reduced from last year by 50 percent, or more. The highest popula- 
tions are along the West Nueces River, in the vicinity of Uvalde, 
end in the Kerrville district. The populatiors in northern and 
eastern Texas arc very low. Considerably higher population of 
— * j^acellaria at the end of August this year than at the same period 
in 193 S. 
