MITE'S OF SUBFAMILY HAEMOGAMASINAE — KEEGAN 249 



Ga., January 29 and 31, 1947 (C. D. C. collection, U. S. P. H. S. 

 Thomasville, Ga.) . Didelphis virginiana 'pigra^ Decatur County, Ga., 

 March 27, 1947, Scalopus aquaticu^ howelli, Decatur County, Ga., 

 January 1947. "Short-tailed shrew," Riverdale, Md., June 3-4, 1934; 

 Vineyard Haven, Mass., April 20, 1938 ; Silver Spring, Md., July 17, 

 1930 ; Takoma Park, Md., July 15, 1933 ; University Park, Md., June 

 27, 1936. "Shrew," Hockessin, Del., May 5, 1939. "Pine mouse," 

 University Park, Md., June 27, 1936; Somerset, Md., June 8, 1938. 

 "Meadow mouse," Menansha, Mass., August 29, 1936; Seaford, Del., 

 May 12, 1936; Nantucket, Mass., August 31, 1936. "White-footed 

 mouse," Riverdale, Md., June 8, 1938; Somerset, Md., January 17, 

 1934; Mechanicsville, Md., August 7, 1933. "Red-backed mouse," 

 Smoke Mountain, N. C, April 17, 1931. "Cotton mouse," Dale County, 

 County, Ala., May 18, 1937. "Mole," Laurel, Md., May 12, 1939. 

 "Maryland shrew," Chestertown, Md., April 12, 1333; Laurel, Md., 

 November 25, 1952, May 12, 1939. Host?, Urbana, HI., October 18, 

 1937. 



Types. — One male and several females, on slide, U. S. N. M. No. 

 948, collected from Scalops argentatus at Ames, Iowa, by J. E. Guthrie 

 in July 1916. 



EUHAEMOGAMASUS BARBERI (Ewing) 



Figure 51 



Haemogamasus harteri Ewing, Proc. Biol. Soc. Washington, vol. 38, pp. 



140-141, 1925. 

 Haemogamasus 'microti Ewing, Proc. Biol. Soc. Washington, vol. 38, pp. 141- 



142, 1925. 



Femcde. — Dorsal shield covers nearly entire dorsal surface and is 

 thickly covered with setae, most of which are 9/i, to 30;ti apart and about 

 45/x in length. Usual pair of apical setae barbed and clearly largest 

 setae on shield. Most setae smooth, although some at lateral and pos- 

 terior margins of shield possess one or two barbs. Six pairs of pores 

 on shield. Most setae of unprotected dorsal integument barbed and 

 larger than those on shield ; one or two pairs at posterior body margin 

 are larger than the others, but are slenderer than usual apical setae. 

 Lacinae of tritosternum distinctly barbed. Presternal area sculp- 

 tured and applied to entire anterior margin of sternal shield ; sutures 

 with tiny spines. Sternal shield about two-thirds as long as wide, its 

 anterior margin nearly straight and its posterior margin slightly 

 concave. Anterior pair of sternal setae shorter than others and the 

 only barbed setae on shield ; three pairs of pores on shield ; the anterior 

 pair with median ends directed posteriorly at a distinct angle; pos- 

 terior pair on posterior margin of shield. Genitoventral shield dis- 

 tinctive in being widely expanded posterior to coxae IV. Usual geni- 



