WILLIAM J. FOX. 17 



of hiiul femur, flistiiictly sulcate above near sides and in addition with a slioit 

 basal fuiTow, sides witli a strong sulcus; second subniarginal cell narrowed about 

 one-half above. Length 7 mm. 



Colorado. The length of petiole and sculpture of middle segment 

 and great extent of red on abdomen distinguish this species. 



Two specimens from Washington have the abdomen broader, with 

 the red coloration not extending beyond the third segment ; and the 

 silvery pubescence of head in front is sparser. 



26. Pxeii baNiriifiiM Pack. 



Mimem basirufa Packard, 1. c, 406, 9, 1867. 



9- — Head distinctly punctured; very closely on the front; fore margin of 

 clypeus distinctly and roundly eniarginate medially; face and clyj)eus derisely 

 pubescent; space between hind ocelli about equal to or slightly less than that 

 between them and eyes; antennss slightly longer than head, pronotum and dor- 

 sulum, flagellum clavate ; dorsulum with distinct, separated punctures; meso. 

 pleurae rather finely striato-punctate, more coarsely above; enclosure of middle 

 segment with the rugpe rather coarse, irregular ; posterior face of middle segment 

 rather coarsely rugoso-reticulate, the rugae extending half way on the sides, the 

 latter smooth basally ; legs black, tarsi brownish ; abdomen with segments 1 and 

 2 red ; petiole thick, flat above, indistinctly sulcate laterally, depressed at apex, 

 about two-thirds as long as hind femur, the sides bisulcate to a greater or less 

 degree; second subniarginal cell narrowed about one-half above. Length 8-8. 5mm- 



% . — Head with close punctures, having the appearance of being granulated ; 

 space between hind ocelli less than that between them and eyes; clypeus only 

 slightly emarginate; antennse hai'dly as long as head and thorax, suhfiliform- 

 middle segment more closely rugose than in 9 ! base of second segment only 

 reddish ; petiole slenderer, about as long as hind femur, otherwise like 9 ! l^ffs 

 dark. Length 8 mm. 



INIaine ; British Columbia ; "Washington ; Mt. Hood, Oregon ; 

 Nevada ; Arizona ; Colorado ; Montana. Ten examples. It is quite 

 distinct by its robust form, strongly flattened petiole, etc. Had I 

 not examined Packard's type of Mimesa basirufa, I should never 

 have considered the specimens before me to be that species. Neither 

 the coloration of abdomen, nor the sulcatiou of petiole are as de- 

 scribed originally. 



27. I'sen iiiiiciilipeM Fox. 



Mimesa. mnculipes Fox, Can. Ent., xxv, 117, % , 1893. 

 % . —Head very finely and closely punctured ; fore margin of clypeus emar- 

 ginate, or bidentate; face and clypeus densely pubescent ; space between hind 

 ocelli about equal to that between them and eyes; antennae distinctly shorter 

 than head and thorax, longer than head, pronotum and dorsulum, flagellum sub- 

 clavate, basal joints not prominent beneath ; dorsulum shining, subtilely punc- 

 tured : mesopleurae strongly striated posteriorly and above, apparently smooth in 

 the middle: middle segment very coarsely rugoso-reticulate; enclosure with 

 coarse parallelo-oblique rugae, and two transverse ones apically: posterior face 

 depressed ; sides coarsely striated ; legs with apex of femora, the tibiae and tarsi 



TKANS. AM. ENT. SOC. XXV. (3) FKBRUARY, 1898. 



