-lM-5- 
Florida. F. C. Bishopp (May 2R): Reports fron the east coast of Florida 
show that sandflies were unusually bad in that locality during the 
entire winter and spring. 
TICKS ( Dernacontor spp.) 
Massachusetts and Maryland. P. 0. Bishopp (May 25): The American dog tick (p. 
variabilis Say) is rapidly increasing in abundance in Maryland in the 
vicinity of Washington, D. C. This species is the carrier of the 
eastern form of Rocky Mountain spotted fever, and three cases of this 
disease have already been reported this season. Unusual abundance of 
the tick has been reported fron eastern Massachusetts. 
North Dakota. J. A. Munro (May 18): Rocky Mountain wood tick (D. venustus 
Marx.) reported from Ami don (Slope County) by D. E. Lawrence. 
(Dot. by C. B. Philips.) 
CATTLE 
SCREW WORM ( Cochlionyia anericana C. & P.) 
General. P. C. Bishopp (May 25): Hibernation studies show that the primary 
screw worn fly overwintered as far north as Valdosta, G-a. , and Uvalde, 
Del Rio, Gonzales, and New Braunfels, Tex. With the coning of warmer 
weather the usual northward spread of the pest is taking place, 
infestations having been reported fron Menard and Sonera on about April 
15, Round Mountain on May 8, and fron Adansville southward on May 21. 
Adults wore taken at Johnson City on May 8. No cases have been reported 
this season in Texas as far north as Dallas. The population in the 
vicinity of Uvalde built up rapidly during April. One ranchnan reported 
120 infestations among his animals. By May 21 infestations had become 
quite numerous throughout the county. 
H. E. Parish (May): G. anericana is quite active in Menard County, 
Tex. , and several collections of larvae have been made from the southern 
part of Kimble County. Practically all calves and lambs develop cases 
of myiasis. The first infestation of C. anericana at Menard was recorded 
May 8. 
Puerto Rico. H. L. Dosier (May 25): On May 2, with the opening up of warmer 
weather, screw worms were becoming more active over the island. A number 
of cases were observed in the vicinity of Mayaguez. 
STABLE PLY ( Stomoxys calcitra ns L.) 
Texas. H. E. Parish (May): Stable flies are causing a great deal of annoyance 
to livestock in the vicinity of Menard. 
A BLOWPLY ( Phormia sp.) 
Oklahoma. P. C. Bishopp (May 25): Eifty cases of myiasis occurring early in 
May in a number of dehorned cattle shipped into Oklahoma from Old Mexico 
