408 Dr. A. S. Packard, Jr's Revision of the 



deeply grooved laterally and mesially beneath, black, smooth and po- 

 lished, rest of abdomen red, two terminal rings black, extreme tip 

 fuscous, paler beneath, scarcely black. 



Length, .30 inch. 



Tuckerman's Ravine, Mt. Washington, N. H., captured August 11, 

 by the late Mr. C. A. Shurtleff. (Museum Bost. Soc. Nat. Hist.) 



The unusually long filiform pale red antennae, the elevated convex 

 silvery front, pale red mandibles, coarsely rugose propodeum with rough 

 sides posteriorly, the pedicel flattened above, and pale reddish tip of 

 the abdomen, which is almost entirely red beneath, afford characters 

 which easily limit this interesting boreal species. 



Mimesa proxima, Cresson. 



M. proxima, Cresson. Proo. Ent. Soc. Phil., iv, p. 488. (1865). 

 Colorado Territory, Ridings. (Coll. Ent. Soc. Phil.). 



Mimesa borealis, Smith. 



M. borealis, Smith, Cat. Hym. Brit. Mus., iv, p. 431. (1856). 



% . Head of the usual proportion, vertex moderately convex, surface 

 finely puncto-striated, scarcely polished, front silvery, maudibles 

 reddish, tips black ; antennas moderately clavate, scape black, flagellum 

 pale red beneath, brown at tips, almost entirely pale red. Prothorax 

 pubescent, silvery behind the crest, which is well marked. Surface of 

 meso-scutum finely, minutely not densely, punctured, polished, scutel- 

 lum and rneta-scutelluni puncto-striated, dull, not polished; propodeum 

 with the enclosure slightly marked, with four or five irregular slightly 

 marked rugae on each side of the mesial furrow, which is minute, in- 

 distinct, narrow; posteriorly the tumid sides are covered with an unu- 

 sually coarse net-work of irregular rugas covering the surface of the 

 shallow slight broad mesial furrow, next the insertion of the abdomen. 

 Tegulae testaceous, wings very faintly clouded with sub-testaceous; 

 pterostigma ferruginous, nervures darker ; two fore pair of femora 

 black, tipped with ferruginous, sericeous ; fore and middle tibiae uni- 

 formly reddish testaceous ; hind pair black at base and tips ; fore and 

 middle tarsi uniformly concolorous with the tibiae ; hind tarsi blackish 

 at base of joints, minutely but densely hirsute. Abdomen one-third 

 longer than head and thorax together; pedicel shorter than usual, 

 equalling in length the width of the abdomen, twice ridged laterally, 

 smooth, above convex, while the body of the abdomen is much elon- 

 gated ; 2d ring long and narrow, black, hind edge red, 3d segment 

 red, 4th red on the front edge, remainder black ; tip elongate, narrow, 

 minutely but densely hirsute, simple, not ridged. Length, .27 inch. 



