CHIGGERS — FARRELL 



193 



Cameron County; 

 Erie County: 



2 .. 9 .. 11 



2 .. 10 .. 8 



. 9 .. 6 

 . 10 . . 8 



Ventral setae: Poststernals smaller than dorsals but of the 

 same general character with setules in proportion; increasing in 

 size posteriorly. Data from 16 specimens: Number of first ster- 

 nals, 2 ; of second sternals, 2 ; of poststernals, 38 to 47. Length of 

 first sternals, 44 to 60 ; of second sternals, 38 to 51 ; of setae near 

 the middle of the first poststernal row, 28 to 37; of setae in the 

 posterior group, 35 to 48. 



Material: Type (No. 1018) and paratypes in the U. S. Na- 

 tional Museum. All other material in the Duke University collec- 

 tions. Specimens from hosts and unattached: 



Blarina brevicauda 

 District of Columbia 



Rock Creek Park, Sept. 18, 1929, 

 4 (paratypes) ; Sept. 20, 1929, 

 3 (paratypes). 

 Pennsylvania 



Moni-oe County: May 1945, 1, 

 Warren County: Sept. 1947, 19; 



Oct. 1947, 2. 

 Erie County: Nov. 1947, 12. 

 North Carolina 



Durham County: Dec. 1947, 1. 

 Orange County: Jan. 1948, 1; 

 July 1948, 7; Oct. 1948, 2; 

 Dec. 1949, 10. 

 Peroniyscus leucopus 

 District of Columbia 



Rock Creek Park, Sept. 20. 1929, 

 1 (type). 

 Blarina b. brevicauda 

 Pennsylvania 

 Venango County: Apr. 1947, 23; 



May 1947, 13. 

 Warren County: Sept. 1947, 12. 

 Venango County: Apr. 1948, 25. 

 Jefferson County: Apr. 1948, 3. 



Sorex f. futneus 

 Pennsylvania 



Venango County: May 1947, 1. 

 Sorex I. longirostris 

 Virginia 



Giles County: Aug. 1947, 20. 

 Soil, mammal runway 

 North Carolina 



Durham County: Feb. 1948, 1. 

 Sorex c. cinereus 

 Pennsylvania 

 Jeiferson County: Apr, 1948, 1. 

 Leaves from cavity of decayed-out 

 root system 

 North Carolina 



Orange County: Dec. 1948, 2. 

 Forest Soil 

 North Carolina 

 Orange County: Dec. 1948, 1 

 Decayed root system 

 North Carolina 



Orange County: Mar. 1949, 1. 

 Blarina sp. 

 Pennsylvania 



Cameron County: Sept. 1949, 5. 



Geographic distribution: E. blarinae has been collected in 

 Durham and Orange Counties, N. C, Giles County, Va., the 

 District of Columbia, and northwestern Pennsylvania (fig. 7,d). 



Seasonal distribution: Over its range E. hlarinae has been 

 collected from its hosts in every month of the year except June. 

 In Orange County, N. C, it has been collected in almost equal 

 numbers from single hosts in July and December. The record of 



