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' RAT MIT3 ( LiT>ony s gas bacoti Hirst) 
Texas F« C. Bishopp ('Jay 24): This mite has "been causing some annoyance 
in offices and stores in Dallas during this spring. It is 
expected that the campaign -which is now "being staged against 
rats will effect a *arge degree of control. 
CATTLE 
SCEEOTCRM ( Chrysomya m ac ell aria Fab . ) 
Texas F. C. Bishopp (April 9): The first specimens of screwworm flies 
wore observed in Dallas on this date. They constituted a very 
small percentage of the fly population about the packing houses. 
(April 17): There has been a very decided increase in the 
number of screwworm flies since the last date when they reached 
approximately S per cent of the total catch in traps. (May 24): 
Screwworm flies increased in abundance considerably throughout the 
month of May, despite the comparatively cool, dry weather. Practi- 
cally no cases of screwworm infestations of livestock were 
reported, however, up to this date, 
D» C. Parman (May 23): The adult fly has increased very little 
during the month at Uvalde, but cases of worms have increased 
rapidly during the last few days. Goats and sheep; 13 cases per 
1,000; loss daring the month approximately 8 head per 1,0C0, 
mostly kids and lambs. Cattle and horses; in canyons, 3 cases 
per 1,000; in lower country, 47 c^ses per 1,000. Loss in calves 
SO per 1,000, all calves infested. 
HORNFLY ( Haematobia irritans L. ) 
Texas F* C, Bishopp (April 10): Hornflies began to appear in annoying 
numbers about this date. (May 24): 'while hornflies Slave increased 
considerably during May, they are not as abundant as usual at 
this time of the year, probably owing to the comparatively dry 
spring which has been experienced in the vicinity of Dallas* 
D. C. Parman (May 23): The horn fly has increased to some 
extent in all of the territory during the month except in the 
strip of territory about 15 miles wide south of town in which 
the heavy hail fell in April and a very heavy rain on May 22, 
It is rare to see an adult; other places from 50 to 2,000 flies 
on cattle. 
OX '"ARBLE ( Hypoderma lineatum DeVill.) 
GENERAL F. C\ Bishopp: Mr. W« E. Dove reports the grubs of this species 
to be maturing and dropping at various points in North Dakota, 
South Dakota, and Montana. A greater number had left the cattle 
