FLEAS (Siphonr.pt ora) 
Oregon. R. L. Post and J. Davis (March): Numerous in barn and house at 
Lebanon on March 8. Reported in new home at Oswego on March 11. 
Abundant in all stages in a dog's bod at Corvallis on March 7« 
A GNAT ( Chaoborus sp.) 
California. A. W. Lindquist (March 3) • Larval population in bottom rmid 
at Nice approximately 40 percent greater than during February 1940. 
TROFICAL RAT MITE ( Ljponyssus bacoti Hirst) 
Delaware, J, M. Amos (March 3) * Infestation reported, from Wyoming, 
Tenants had been bothered with mites since first of year. Several 
hundred mites were found. The occupant of the house said that the 
mites wore fewer at this time than immediately after the treatment 
for rats, which had been completed about a week before the inspection 
was made. 
HOOD TICKS (Ixodidae) 
Idaho, A. L. Gibson (March): Noted as quite abundant in southern Bonner 
County on March 8 and 23. Unusually active for this time of year. 
BLACK WIDOW SPIDER ( Latrodoctus man tans E.) 
Mississippi. C. Lyle (March 2l) : Live adult female sent from Amite County. 
CATTLE 
STA3LEFLY ( S tommy s calcitrans L.) 
Florida. W, E. Dove (February 28 ) : Adults continued to emerge in cages 
on peanut litter in Florida throughout the winter. 
CATTLE GRUBS ( Hypo derm a spy.) 
Oklahoma. J. M. Maxwell (March 29): First heel fly activity observed 
about March 15 near Lawton. No report from southeastern part of 
State where flies ordinarily occur earlier. Between 15,000 and 20,000 
head of cattle were treated. Ox warble (H. lineatum Do Vill) abundant 
throughout the State during winter. 
Texas. E, W, Laako (March l): Survey of 227 dairy cows at Dallas on 
February 15 showed that 70.9 percent of the animals were uninfested. 
Most of the animals had scars on backs from which grubs had recently 
dropped; 28.6 percent had from 1 to 5 grubs each; and 0.4 percent 
had from 6 to 10 grubs. All grubs were extracted and found to be 
third ins tar, most of them being near maturity. 
E. C. Cushing (March ll); Heel flies were active in the vicinity 
of Menard during the first half of February, 
