INVESTIGATIONS ON THE MUTILLID WASPS 295 



pubescence, the apical fringe black except extreme lateral portions 

 orange; sternites 3-6 with small, scattered punctures, the apical 

 fringes of sternites 3-5 black with a few orange hairs at the lateral 

 extremes, the apical fringe of sternite 6 entirely black; last sternite 

 with scattered punctures and sparse, long, black pubescence. 



Legs very dark mahogany red, almost black, clothed with long, 

 erect, moderately dense, black hairs; calcaria black. 



Wings dark fuliginous; cell 2nd K^ + Ra broadly truncate at the 

 apex ; cell R^ almost obsolete ; vein M3+4 received by cell Eg midway 

 between the base and apex; veins r-m and R5 coalescing on vein r. 



H olotype. —M.2i\Q, Cat. No. 40755, U.S.N.M., Los Angeles County, 

 California. 



Paratypes. — Male, La Jolla, San Diego County, California, August 

 19, 1917 (H, Klotz) ; 2 males. Bear Valley, San Bernardino County, 

 California, July, 1913 (F. C. Clark) ; male, San Bernardino County, 

 California; male, Los Angeles, California, May 27, 1917; 7 males, 

 Los Angeles County, California; 3 males, Claremont (Baker); 2 

 males, mountains near Claremont (Baker) ; male, Santa Paula 

 (Essig) ; male, Los Gatos Canyon, Fresno County, June 6-8, 1907 

 (J. C. Bradley) ; male, Coalinga, Fresno County, June 9, 1907 (J. C. 

 Bradley) ; male, Palo Alto, California, July 27, 1894; male, Berkeley 

 (E. P. Van Duzee) ; male. Point Reyes, September 10, 1906; male, 

 Del Norte County, August, 1916; 4 males, California; male, Cor- 

 vallis, Oregon, July 28, 1925 (H. A. Scullen) ; male, Corvallis, Ore- 

 gon, July 29, 1925 (G. R. McGinnis) ; male, Corvallis, Oregon, 

 August 4, 1925 (H. A, Scullen) ; male, Corvallis, Oregon, August 

 6, 1924 (H. A. Scullen) ; male. Crater Lake, Oregon, August 2 

 (W. J. Chamberlain); male, Osoyoos, British Columbia; 2 males, 

 Okanaga Valley, British Columbia; male, Okanaga, British Colum- 

 bia, August, in collections of United States National Museum, Har- 

 rington collection, Canadian Department of Agriculture, Leland 

 Stanford Jr. University, University of Minnesota, Cornell Univer- 

 sity, Iowa State College, Oregon State Agricultural College, Cali- 

 fornia State Insectary, and the author. 



Superficially this species is indistinguishable from the males of 

 coccineohirta. The genitalia, however, as may be seen in the illus- 

 trations, are very different. The two species may be distinguished 

 most easily by the character used in the key, that of the comparative 

 lengths of the first two segments of the flagellum; other differences 

 are present, but are very subtle and difficult to recognize; in 

 coccineohirta the area immediately posterior of the bidentation on 

 the medial apical margin of the clypeus is glabrous and impunctate, 

 while in abdita it is punctate; the body is in general more coarsely 

 sculptured in the latter than in coccineohirta. 



55287—28 20 



