•526 PROCEEDINGS OF THE ACADEMY OF [1895. 



of flagellum united, the latter joint much longer than the second; 

 clypeus with anterior margin truncate, not barbate laterally; front 

 strongly and sparsely punctured; dorsulum with large sparse 

 punctures, those of the mesopleurae less strong; suture between 

 dorsulum and scutellum foveolate; episternum and epimerum 

 mesothoracis indistinctly separated, the mesosternum sharply cari- 

 nated anteriorly and laterally; middle segment posteriorly with 

 large punctures, the enclosure rather large, well-marked, with 14-16 

 close-set, ridges or strire; legs stout, the tibiae spinose, fore tarsi 

 with a strong comb; wings clear, except the usual fuscous cloud, 

 which includes the marginal and part of the second and third sub- 

 marginal cells, nervures brown, stigma yellowish, submedian cell of 

 posterior wings terminating at the origin of the cubital vein; abdo- 

 men strongly punctured, particularly the second ventral segment, 

 pygidial area with large, elongate punctures, ridged laterally. 

 Black; clypeus, labrum, mandibles except apex, scape, flagellum 

 beneath, inner and posterior orbits, sometimes a line across the ver- 

 tex, line on pronotum, tubercles, spot behind them, scutellum, 

 postscutellum sometimes, a broad fascia at apex of dorsal segments 

 1-5, and apex of second and third ventrals more or less, all yellow; 

 legs, including coxse, entirely reddish- testaceous. Length 8— 8J mm. 

 $ .—Resembles 9 as to coloration but has a strong grayish 



sericeous reflection over the entire in- 

 sect, and the tibiae and tarsi are more 

 or less yellow. Eyes strongly con- 

 verging beneath; clypeus with a fringe 

 of hairs on each side, anteriorly, 

 which are not bunched, however; joints 

 8 and 9 of flagellum somewhat tu- 

 mid beneath, otherwise the antenna? 

 simple; fifth ventral segment devel- 

 oped into a distinct lobe on each side 



F ig. 1. Apical segments of abdo- r 

 men. G. con/ertus, showing produc- (see figure 1). Length 8 mm. 



tion of fifth ventral segment. Montana. Is remarkable for the 



peculiar modification of the fifth ventral segment of the male. 



11. Gorytes tricolor Cress. 



Gorytes tricolor Cresson, Tr. Am. Ent. Soc, I, p. 380, $ (non 9 ). 

 Gorytes tricolor Fox, Can. Ent., 1892, p. 149, 9 . 



New Mexico; Colorado; Montana. The color of this species 



