et eee 
tion of the grubs. Of 104 recovered in the grass plot, 1 had traveled 
130 inches; 12,between 10 and 20 inches; and 52,less than 10 inches; 
while 39 were recovered in na part of the central area where the grubs 
were started. In the fallow cage 106 grubs were recovered, of which 1 
had traveled between 40 and 50 inches; 4,between 30 and 40 inches; 7, 
between 20 and 50 inches; 26,between 10 and 20 inches; 32,less than 10 
inches; and 36 were still in the central area where they were placed at 
the beginning of the test. In general, as in the greenhouse tests, the 
grubs moved greater distances in fallow ground than in sod. The grub that 
traveled 130 inches in sod must have been an unusually active one. The 
other three ‘quarters of the two plots will be examined at varied intervals 
next spring." 
Distribution and abundance.--H. Fox, Moorestown, reports that "At 
the end of the 1933 season the area of continuous infestation is estimated 
as 8,800 square miles (a provisional estimate of 8,600 square miles was 
reported for August).. The area in: square miles in the different States 
involved is as follows: New Jersey, 6,000; Pennsylvania, 2,120; Delaware, 
560; Maryland, ay and New York, 70. The records on soil population 
frequencies at a set of golf courses included in the periodic grub 
surveys, as given herewith, indicate that the infestation in eastern 
Pennsylvania seems to aie somewhat more intense than in the adjoining sec- 
tions of New Jersey." 
Comparison of Soil Population Frequencies in Stations 
included in Periodic Series of Surveys, 19335 


Stations’. . Date area Population per Square Foot 
og. Ft. Average Minimum Maximum 
New Jersey 
Moorestowm Golf? Course Oct. ¢ De Oras @) 20 
Riverton i y OChs hawks .ce 1.4 @) 35 
Dundineton Coyote ~. M ‘Qrennpe tli vate 15.6 O 46 
Woodbury a h Oct ao 150 24 0) 24 
Oak Valley a u Oct., 10 130 aot 0 oR 
Pitman i" i Ct sme 213 gel @) 35 
ine Valley Hq " Oct. 9 148 uve 0 24 
Forest Gate n a oh re oa 150 LG 0 49 
Hopewell it u OCied uke 116 hie 1 65 
Pennsylvania 
Philmont Golf Course Oct. 26 L136 ee wok 8) 43 
Ashbourne N if OGi. bo 100 rae 8) 0 32 
Cedarbrook " " Qct. 3-4 142 ee ipa O 58 
Whitemarsh " u Oct. 4-16 102 120 C 45 
Marble Hall AL eletae, te 100 9.4 0 ol 
Plymouth Valley " 2 Oleeeper 40 LOG eee Q de 
Doy Lestoun Mu L Nov. 1 1U0 Li.6 O 28 
Concordville u i" Sct. <6 ay o.0 0 ol 
Delaware 
Wilmington Mun. Course Sept. 22 100 10.8 6) 61 
DuPont Golf Course Oct. 68 50 ie O 17 
