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to be less numerous on cattle this spring than for several 
years. The average number per head in 452 milk cows examined 
was 2.2. The grubs are maturing rapidly and leaving the cat- 
tle. H. bovis DeG. is still appearing in the subcutaneous 
tissues of the backs. Cattle are being greatly annoyed by 
heel fly attacks. Some herds are refusing to go out to pas- 
ture on account of thuir fear. H. lineat um De Vill. is still 
present in the backs of a number of cows in most herds. Le- 
sions of penetration of the young grubs of this species are 
numerous and dairymen are complaining of the swellings from 
this cause along the escutcheons of the cows. At Montpelier 
there were 84 cows examined which showed an average of 1.5 
grubs per head. 
Hew Hampshire 
F. C. 3ishopp and H. S. Peters (June 19): An average of 
9 grubs per head was obtained by examination of 126 cows 
it Littleton. 
HORN FLY (Haematobia irritans L. ) 
Vermont 
F. C. Bishopp and H. S. Peters (June 20): Horn flies are 
causing some annoyance to dairy cattle in north-central Ver- 
mont. Most farmers are now using fly sprays; some began 
spraying about June 10. In unsprayed herds the number of 
horn flies per animal ranges from 25 to 1,500. 
Missouri 
L. Haseman (June): Horn flies are unusually abundant; the 
heaviest infestations that I have ever known for June. 
HORSLS 
HORSE FLY (Tab anus lasiophthalmus Macq.) 
Hew York 
P. C. Bishopp and H. S. Peters (June 12): Horse flies are 
causing much annoyance to horses and dairy cattle near Port 
Jervis. Stock kept from grazing during much of the dqy from 
the combined attacks of these flies and Hypod i-rma spp. 
These flies number from 2 to 10 per head. 
Vermont 
P. C. Bishopp and H. S. Peters (June 20): Tabanids are an- 
noying dairy cattle much in low-lying pastures in the vicinity 
of Burlington. 
Pennsylvania 
P. C. Bishopp and H. S. Peters (June 11): Cattle are 
greatly annoyed .until nearly dark in the vicintiy of 
7eatherly. There are from i to 10 tabanids attacking each 
animal in a herd near here. 
