of Dallas about March 10. They became sufficiently numerous 
by April 1 to be very annoying to livestock, but their abundance 
is probably not above normal." 
SCREW-WORM (Ch rysomya macellari a Fab . ) 
Texas F. C. Bishojjp (April 26) . "These flies are reported oy Mr. D. C. 
Parman to have appeared aoout the middle of April in swarms greater 
than have oeeii observed since the Bureau station was establisned 
at Uvalde nine years ago. Tneir abundance on the plateau region 
at Sonora, as reported by Mr. 0. G. Bab cock, is about normal for 
this time of year and their prevalence in the vicinity of Dallas 
is practically normal. Their unusual abundance in the south- 
western part of the State, however, indicatea that the depredations 
of the insect will probably be heavier than normal this year. The 
rains wnicn have occurred throughout west Texas will, no doubt, 
favor tneir breeding in that region." 
BLACK BLOW-FLY ( Phormia regina Meig. ) 
Texas F. C. Bishopp (April 28). "This species, which is responsible for 
wool maggots in sheep in the Southwest, was very abundant in the 
vicinity of Dallas in March and is still increasing. Mr. 0. G. 
Babcock reports this species to be unusually abundant for the 
middle of April in the vicinity of Sonora." 
BITING LOUSE OF CATTLE ( Trichodectes scalar is Nitz.) 
New York 3. Matheson. "Large quantities of material, showing serious 
infestation by this pest, were received from Schuylerville , 
in January, and from McGraw, in March." 
Texas F. C. Bishopp (April 28). "Tnis species was not as prevalent 
throughout north-central Texas as it has been in many years, 
but a very few heavily infested animals were observed. " 
SUCKING LICE OF CATTLE 
Texas F. C. Bishopp (April 28). "None of the three species of sucking 
lice were as abundant on cattle the past winter and spring as is 
usual in this section." 
CATTLE SCAB ( Psoroptes communis Furst.) 
California (Weekly news letter, State of California Department of Agriculture) 
(April 15). "Last week Dr. Edward Records, State Quarantine 
Officer of Nevada, notified Chief of the Division of Animal Industry 
of this State that six bulls had been purchased from a herd in 
Carson Valley, Nevada, where cattle scab is known to exist, and 
shipped to California in the vicinity of Topaz and Coleville. 
Measures are being taken to prevent tne introduction of this pest 
from the colony established in California." 
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