ThK CANADIAN ElNTOMOtOClSY. 259 



Posterior orbits greyish pollinose, becoming more yellowish above. 



Thorax shining greenish, somewhat bronzed black, with three broad, 

 subcontiguous opaque brownish bronzed stripes; median cinereous line distinct 

 on the anterior half. Yellow lateral margins complete. Pleurae bluish black, 

 the niesopleura with oblong-oval yellow spot, and a white pubescent spot below 

 it. Scutellum shining olivaceous black with yellow border. Pile of thorax and 

 scutellum obscurely yellowish, the latter with a fringe of long black hairs; 

 pleurae with sparse whitish pile. 



Abdomen deep shining black ; first segment with only the antero-sides 

 or with a very narrow anterior border yellow. Second segment with a narrow 

 median, slightly arcuate or straight, interrupted yellow band, the lateral mar- 

 gins in front of this narrowly yellow; or with the band almost obsolete and 

 the margins black. Third segment with a median longitudinal yellowish line 

 abbreviated at both ends, the black in front forming more or less of a circle ; at 

 each side with a basal, broad yellow band, with an oval production posteriorly 

 at the inner end. Fourth .segment with five yellow .spots, the median one similar 

 to the median line on the third .segment ; two elongate broad, longitudinal spots, 

 their posterior ends rounded, situated each side of the median spot, and two 

 sub-square spots, longer laterally, on the anterior angles. Fifth segment with 

 the sides yellow, more narrowly so posteriorly. Apical margins of .second to 

 fifth segments yellow or reddish. In darker specimens the median lines are 

 almost obsolete and the spots all smaller, those on the posterior angles of the 

 fourth segment triangular and the apex of the fifth segment black. The spots 

 on the third segment occupy not juore than the anterior half of the segment 

 where they are longest. (In gcminatus they always occupy considerably more 

 than half, even in very dark specimens.) 



Legs yellow, including the hind coxae ; posterior femora black, except 

 the ends; tibiae with a black band near the end; hind tarsi brown, anterior 

 tarsi reddish apically ; the hind femora sometimes with only a black band sub- 

 apically in the female. In the male the hind tibiae broadly produced at the 

 apical end, and arcuate ; hind femora strongly arcuate, the process near the 

 base stouter and with shorter arm projecting posteriorly than in gcminatus. 



Wings hyaline, stigma yellowish brown. 



$. Antennae with the " third joint broadly brownish above; face 

 distinctly white pilose below ; front shining black, black pilose ; not as nuich 

 narrowed above as in geminatns and the yellow on the sides also seems to be 

 slightly narrower; abdomen, second pair of basal spots moderately broad, a 

 little broader medially and laterally, interrupted medially by a roundish black 

 circle with a dibber-shaped yellow spot in its middle, spots not reaching the 

 margin; spots on the fourth segment enlarged postero-medially ; fifth seg- 

 ment with triangular spots on the basal corners and a smaller anterior .spot in 

 the middle ; in other respects as in the male. 



Holotype. 6, Victoria, B.C., May 5, 1919, (\\'. Downes). 

 Allotype. 9 , Saanich Dist.. B.C.. May 17, 1909 (Downes). 



Types in the Canadian National Collection. Paratypes. 40 .specimens 

 of both sexes from California, Oregon and British Columbia. 



