considerably during the month but cool weather has held then in check 
to some extent. The average number per animal is about 200. Although 
they are annoying dairy cattle some dairymen have not begun to spray 
for them. 
Missouri I. Haseman (June 25): This little fly is now infesting livestock 
in swarms and seems too re abundant than usual at this sea SOU* 
Texas E. ff. Laake (May 20): It is rare to see over half a dozen horn 
flies per animal in southwestern Texas. The extreme dry and hot weather 
has held this species of fly down to such an extent that in many 
places it seems to be almost entirely absent c (June 20): Horn flies 
have increased considerably during the last month and conditions 
are now very favorable for their development. 
0. G. Bab cock (June 20): At Menard adults are averaging from 150 
to 250 flies per animal. Sores were also beginning to appear. (June 23): 
At Sonora adults are averaging around 50 to 100 per animal. Very 
few signs of sores appearing. 
STABLE FLY ( Stoaoxys c aloi trans L. ) 
Ohio F. E, Bishopp (May 27): A few s table ;"f lies have been present at 
Columbis throughout the month but they have not been numerous enough 
to cause much annoyance to stock. 
12* 
SCSOTOEM (C hrysomya macellaria Fab. ) 
Ohio F. C. Bishopp (May 28): In examining swarms of flies around an animal 
rendering plant near Columbus I saw and collected a single specimen 
of the scrowwerm fly. This is probably the earliest occurrence re- 
corded for J £his species at this latitude. The following percentages 
show the approximate relative abundande of the different species at 
this rendering plant: 
PTiormia r egln a ~ -- 84 c 5 per cent Luc ilia sericata- Q.257$er cent 
_P. teri-ac-.x.cvae - — 15*0 per cent Kusca domestica - 0.25 per cent 
Texas E. 17. Laake (May 20): The screwworm fly is extremely abundant com- 
pared to other species of flies throughout southwestern Texas, Worn 
cases in livestock are increasing and are very heavy where animals 
have recently been branded. (June 20): The serewworm fly is unusually 
abundant throughout southwestern Texas,. In the Nueces and Brio 
canyons trappings show that over 95 per cent of all flies caught are 
of this species and when a good bait is supplied the tra£s. fill- up 
from 2 toi3 times a week. TCorm cases have increased over 200 per 
cent during this month. In one herd of sheep in the Dry Frio Canyon 
16 per cent of the animals were infested. The average i3 about 2 to 
3 per cent for all classes of livestock, but is from 50 to 100 per 
cent for new-born salves and freshly branded animals. One case of 
screwworms infesting the ear of a three-months- old Mexican child 
living in the Dry Frio Canyon, 30 miles north of Uvalde, has been 
under the observation of the writer during the past week, 
0. G, Babcock (June 23); Flics continuesin superabundance at Sonora, 
"Uormy" cases in wounds continue on all ranches. Remedial measures 
-21S- 
