Uhler.] 410 [April 17, 



cheeks black, the superior lobe small, convex, the inferior lobe longer, 

 subtriangular, acute at tip, gula black, bucculae margined with yel- 

 low; labrum and setaa yellow, rostrum yellow, or pale piceous, shin- 

 ing, reaching a little beyond the posterior coxae, the basal joint black, 

 a little longer than the head; antennae black, or blackish fuscous, mi- 

 nutely hairy, basal joint yellow at tip, the third and fourth joints 

 paler than the others. Pronotum regularly convex, broader than 

 long, polished, obsoletely wrinkled, rather more closely pubescent in 

 the males than in the females; humeral angles a little prominent, 

 subacute ; posterior margin regularly bowed, the edge deflexed; 

 lateral margins oblique, hardly sinuated, the si'des steeply declin- 

 ing, the carinate edge blunt; anterior submargin collar-like , sin- 

 uated in the middle, the callosities very slightly elevated, broad 

 and long, coalescing interiorly. Pectus piceous, or black, bald, shin- 

 ing, edges of anterior acetabular and xyphus, mesopleural piece, teg- 

 ula and surroundings of the posterior acetabular, more or less yellow, 

 sometimes tinged with piceous; anterior and intermediate femora 

 slightly sprinkled with brown near the tip, posterior femora com- 

 pressed, a little embrowned above and below, on the inner and outer 

 faces with a few brown dots; knees with a black dot, tibial spines 

 black, and each with a black dot at the base; tarsi more or less pi- 

 ceous at base and tip, nails black. Scutellum minutely, obsoletely 

 rugulose, black, shining, having a yellow \/ formed by the tip of the 

 lateral margins. Hemelytra black or piceous, closely clothed with 

 yellowish pubescence, corium at base with a pale yellow elongated 

 spot, which runs along the suture and slightly upon the clavus, a 

 small spot at exterior tip, and the cuneus with a large spot touching 

 the base, also yellow ; membrane smoky brown, the basal edge, ner- 

 vures of the areole, and a pale spot on the middle, yellowish. Venter 

 piceous, minutely pubescent, the superior genital appendages of the 

 male yellowish, the lateral appendages blackish. The deeply colored 

 females usually have the venter black, more or less invaded by yel- 

 low, or whitish, spots on the middle and sides. Length, 4 millims. 

 Humeral breadth, 1^- millims. 



No. 130, Harris' Collection, d". " Cambridge, Mass., July 14, 1835." 

 The two specimens in this collection are males ; the one a newly ex- 

 cluded specimen. , . 



The species is widely distributed in the United States, and is found 

 also in British Columbia and Canada. It sometimes swarms on 



