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



Mimesa cingulata, n. sp, 



% . Of the same size as M. pauper, and closely resembling it. 

 Head of the usual proportions ; vertex elevated, convex, minutely 

 punctured, polished ; an unusually prominent ridge between the inser- 

 tion of the antennae ; front with a golden silvery pubesence, golden 

 when seen from above ; base of clypeus dark ; mandibles black, red at 

 tip ; antennas much more clavate, thickened more at the tip than in the 

 preceding species ; and sutures more than usually distinct; flagellum 

 darker than usual, not so broadly pale reddish beneath as usual; tip 

 black from above. Prothorax unusually well crested, scarcely pubes- 

 cent behind the crest; meso-thorax smooth, polished, with frequent 

 minute shallow punctures ; meta-scutellum rougher, somewhat hirsute. 

 Propodeum with a distinct broad equilaterally triangular enclosure, 

 with four indistinct small rugae on each side of the indistinct mesial 

 furrow, which is crossed posteriorly by irregular rugae ; behind is a 

 coarse net-work of rugae, sparsely hirsute, the rugae on the enclosure 

 and posteriorly, are much coarser than in the preceding species, (AA 

 pauper) ; posteriorly the mesial impressed deep broad channel is well 

 marked. Tegulae testaceous, nervures black; pterostigma slightly fus- 

 cous; femora black, middle and fore pair tipped with dark red; tibiae 

 dark red, especially the posterior pair, which are pale red at base and 

 tips; tarsi dark, reddish at tip of joint, especially the posterior pairs. 

 Pedicel of abdomen very short, scarcely longer than one-half the width 

 of the body of the abdomen ; above with a mesial ridge ; grooved deeply 

 on the sides, black, smooth and polished, body of abdomen not so long 

 as the head and thorax together, entirely black, except the posterior 

 edge of the 2d and 3d rings, the under edge of the 3d being black, 

 shorter, more broadly ovate than in any other species; tip with an in- 

 distinct supraanal area. Length, .20 inch. 



Brunswick, Me., August. 



This is the shortest, plumpest, and one of the smallest species known 

 to us ; the body of the abdomen is scarcely as long as the head and 

 thorax together, the pedicel is scarcely longer than one-half of the 

 width of the abdomen. Also, the very clavate black antennae, the 

 golden pubescence on the head when seen from above, the unusual 

 prominence between the antennae, and the coarsely rugose propodeum 

 are all characters in which it differs greatly from M. pauper, its nearest 

 ally. 



Mimesa unicincta, Cresson. 



M. unicincta, Cress., Proc, Ent. Soc, Phil., vol. iv, p. 488. (1865). 

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



