14 PROCEEDINGS OP THE NATIONAL MUSEUM vol. S2 



Abdomen in part, and tibiae entirely, reddish yellow; clypeus not toothed, 

 petiole slightly flattened above, with a rather pronounced ridge or carina 

 along each laterodorsal edge ; pygidial area broader, densely shagreened 



and dull on all, or a large part, of its surface 6 



6. Petiole of abdomen red, remainder of abdomen black; pygidial area entirely 

 shagreened and dull, with a series of fine hairs along each side ; mosono- 

 tum coarsely stria to-punctate on almost entire extent. 



erythropoda Rohwer 



Petiole black, remainder of abdomen red ; pygidial area shagreened on rather 

 more than its apical half and on sides, glossy basally, and with several 

 series of stiff hairs apically and laterally ; mesonotum with fine separated 

 punctures on its entire extent monticola (Packard) 



PSEN (PSEN) MONTICOLA (Packard) 



Plate 1, Figltres 5, 6 



Mimesa monticola Packard, Proc. Ent. Soc. Philadelphia, vol. 6, p. 407, 1867. 

 (Male.) 



This species is readily recognized in both sexes by the bright-red 

 abdomen and its black petiole. The clypeus has a rather broad 

 central transverse extension that lacks definite lateral teeth. Wing 

 venation as in plate 1, figures 5 and 6. 



Length, 8-10 mm. 



Localities: Mount Washington, N.H. (Packard); Philadelphia, 

 Pa. (Fox) : Glen Echo, Md., July 1 to 23, 1921 to 1923 (J. K. 

 Malloch) ; JPlummers Island, Md., July 28, 1912 (H. L. Viereck) ; 

 Glencarlyn, Va., July 14, 1907 (F. Knab) ; Georgetown, D.C. (H. H. 

 Smith) ; Kosslyn, Va. (H. H. Smith) ; Falls Church, Va., July 21, 

 1922 (R. A. Cushman) and July 2, 1912 (W. Middleton) ; Harris- 

 burg, Pa., July 4, 1910 (W. S. Fisher) ; Pyziton, Clay County, Ala. 

 (H.H.Smith). 



The Alabama female has the femora entirely fulvous, differing 

 thus from other examples of that sex before me, which have the 

 femora largely blackened. 



The specimens which I took at Glen Echo were swept away from 

 the overhanging branches of trees alongside a path in the woods on 

 the north side of the road. 



PSEN (PSEN) ERYTHROPODA Rohwer 



Psen {Mimesa) erythropoda Rohwee, Proc. Ent. Soc. Washington, vol. 12, 

 p. 182, 1910. (Female.) 



One point in connection with the original description of this 

 species is that the abdominal petiole is not included among the por- 

 tions of the insect that are listed as red in color. Sometimes this 

 is slightly brownish, but it is never black. 



Length, 8-14 mm. 



