-31- 
BROWN DOG TICK (Rh ipicephalus sanguineus Lo.tr.) 
Illinois. C. L. Metcalf (February 21 ): Reported from a dog kennel at Skokie, 
in the extreme northeastern part of the Statn late in December, 
AMERICAN DOG TICK ( Dermacentor variabilis Say) 
Massachusetts, M. M. Cole (February 19 ) • Last recorded activity on Martha’s 
Vineyard was December 19 for larvae and August 20 for nymphs on meadow mic 
and October 31 for adults on a dog. 
CHINCHE ( Ornithodoros talaje Guer.) 
New York. R. Matheson (February): ' , : Specimen taken from a house in Ransom* 
ville on December 13, 1940, Still alive on February IS. The species . he.s > 
been present in the home since about 1925# 
CATTLE 
SCREWWORM ( Cochliornyia americana C. & P. ) ■ 
General. D. C. Parman (February 15) ; Fall infestations considerably above 
normal end over more than normal area throughout the Southwestern States, 
infestations in southern Arizona, and California were high. In California 
infestations were reported as far north as Redding, considerably farther 
north than has been reported before. Infestations wore above normal in th» 
Xtfestern half of Tgxas, and in- and about Laredo they were the highest ever 
recorded. Along the lower Gulf coast through eastern Texas, Louisiana, ark 
Mississippi, infestations were low or entirely absent. Reports from South- 
eastern States indicated that infestations were low, 
CATTLE GRUBS ( Hypo derma spp.) 
Missouri, L. Hasemen (February 22): Examinations made the last week in January 
in central Missouri showed a few of the ox warbles almost ready to leave 
the backs of cattle, though most -of the larvae bund only recently arrived 
‘ in the backs of the hosts. 
Terns, E. W. Laake (January 15 ) ; Abundance and seasonal development of H, 
lineatum (DeVill.) in 100 cows of an average dairy herd in the vicinity of 
Dallas were as follows: 13 percent of the animals uninfested; 71 percent, 
1 to 10 grubs each; 9 percent, 11 to 20 grubs; 5 percent, 21 to 30 ’grubs; 
1 percent, 31 1° 40 grubs; and 1 percent, 4l to ^0 grubs. Of 491 cattle 
grubs, 24.2 percent were in the second stage and 75»S percent were in the 
third stage. (February 15)* Abundance- and seasonal development in 227 
dairy cows at Dallas were as follows: ~[0.S percent of the animals unin- 
fested, but most of them had scans on their banks, from which grubs had 
recently dropped; 2S.6 percent had from 1 to 5 grubs each, and 0.4 percent 
had from 6 to 10 grubs. All of the 130 grubs still present in these 
animals were in the third stage and most of them were near maturity. 
