248 PROCEEDINGS OF THE NATIONAL MITSEUM vol. loi 



ing ; maxillae and palpi as in adults. Nymph : Dorsal shield narrower 

 than in female ; setation as in adult female ; tritosternum and peritre- 

 mal area as in adults ; setation of sternal shield as in adults ; anal shield 

 with three accessory and three usual anal setae ; posterior usual seta 

 largest on shield ; mouth parts as in female ; legs as in female. 



Size. — In a series of 32 female specimens body length varied from 

 952/A to 1,148/x; body Avidth from 546/x to 686/a. Mean length was 

 l,047)a; means width 616/x. Nine males varied from 784/x to 868ju. in 

 body length and from 427/* to 504/* in body length. Mean length was 

 833/x ; mean width 482/*. Body length in a series of 35 nymphs varied 

 from 5G0/* to 756/* ; mean length was 658/*; mean width 370/*. Ewing's 

 type female measured 1,080/* in length. 



Distribution and hosts. — This species has been taken from several 

 of the eastern and southern United States and southern Canada. It 

 has been reported only twice west of the Mississippi Kiver. I have 

 examined specimens as follows: Blarina hrevicauda talpoides., Fair- 

 field County, Ohio, April 23, 1935 ; Ithaca, N. Y., April 20, August 30, 

 October 3, 1936, and November 29, 1947; Lucerne-in-Maine, Maine, 

 November 3, 1928. Blarina hrevicauda., Ithaca, N. Y., September 10, 

 1936, March 21, 1943 ; Wayne County, Pa., July 7 and 23, 1945 ; District 

 of Columbia, September 17, 1929 ; Point Abino, Welland County, On- 

 tario, September 9 and 11, 1946. Blarina 'brevicauda conipacta., Nan- 

 tucket, Mass., June 13, 1936. Blarina brevicauda aloga., West Tisbury, 

 Mass., June 9, 1936. Microtus ochrogaster nest, Urbana, 111., April 9, 

 1939. Peromyscus (or Microtus) nest, Chihnark, Mass., February 14, 

 1939. Microtus pennsylvanicus pennsylvanicu^s, Ithaca, N. Y., March 

 26, 1936 ; Scraggy Neck, Mass., June 18, 1936 ; Edgartown, Mass., June 

 14, 1936, November 13, 1937; Squibnocket, Mass., June 11, 1936. 

 Microtus pennsylvanicus, Temagami, Ontario, September 8, 1934. 

 Peromyscus gossypinus gossypinus., Okefinokee Swamp, Ga., January 

 28, 1936; Yemassee, S. C, August 10, 1938; St. Mathews, S. C, Janu- 

 ary 30, 1935. Peromyscus maniculatus gracilis., Temagami, Ontario, 

 September 8, 1934. Peromyscus leucopus noveboracensis.^ Somerset, 

 Md., June 9, 1933. Sorex palustris albibarbis, Mount Katahdin, 

 Windy Pitch, Maine, August 23, 1928. Sorex fimieus., Mount Watatic, 

 Ashburnham, Mass., October 12, 1933. Sorex cinereus, Ithaca, N. Y., 

 July 24, 1947. Sorex palustris, Montana, September 25, 1948 (U. S. 

 P. H. S. collection, Hamilton, Mont.). Parascalops breweri, Point 

 Abino, Welland County, Ontario, September 16, 1945. Pitymys 

 pinetorum, Point Abino, Welland County, Ontario, September 4, 1945. 

 Condylura cristata, Leetonia, Ohio, September 14, 1934. Rattus nor- 

 vegicus, District of Columbia, February 28, 1946. Clethrionomys 

 gapperi rhoadsi, Mays Landing, N. Y., May 16, 1931. Sigmodon his- 

 pidus Mspidus, Grady County, Ga., January 8, 1947 ; Thomas County, 



