This common northern species ranges entirely across the continent 

 from Newfoundland to Alaska. From the intermediate region there 

 are specimens before me or known to me from the White Mts., New 

 Hampshire; Tyngsboro and Forest Hills (near Boston) Mass.; Mar- 

 quette, Michigan; Three Lakes, Wisconsin; Mile 214, Hudson Bay 

 R. R., Manitoba ; Edmonton, Alberta ; Virginia River, Utah ; McBride 

 and Frazer River, British Columbia. Mannerheim's type was from 

 Sitka, as was also the type of his scapularis, which is without much 

 doubt identical. 



A. nigroaeneus Er. Kaf. Mark. Brand., 1837, I, p. 157. 



Erichsoni G. & H. Cat. Col. 1868, II, p. 454. 



lutosus Cr. Tr. Am. Ent. Soc. 1873, IV, p. 419. 



Size large, oblong-oval; black, the margins sometimes very narrowly and ob- 

 scurely ferruginous; antennae, palpi and anterior legs rufous, middle and hind 

 legs darker rufous or piceous. Elytra strongly irregularly reticulate, the meshes 

 of moderate size and having a secondary reticulato-alutaceous sculpture, more 

 distinct toward the apex; dorsal series of punctures well marked, minute punctu- 

 ation nearly lacking. Prosternal process short, angularly convex; metasternal 

 sulcus rudimentary; metasternum between meso-coxae and coxal plates longer 

 than half the length of the latter; apical ventral of male obliquely longitudinally 

 strigose each side of the middle. Pro- and mesotarsi of male distinctly in- 

 crassate, the palettes of the glandular pubescence elongate, small and of oblong 

 form; protarsal claws of male of moderate length, the anterior one thickened 

 basally, the posterior one more slender but more noticeably sinuate beneath. 

 Length 9.3 to u.i mm. 



One of our largest species and of wide northerly distribution, 

 occurring from Labrador and the New England States to British 

 Columbia. 



A. confertus Lee. Proc. Acad. Nat. Sci. Phila. 1861, p. 340. 



walsinghami Cr. Tr. Am. Ent. Soc. IV, 1873, p. 419. 

 Evenly oblong-oval; black, margins not or scarcely paler, elytra with a small 

 elongate sublateral yellow spot, sometimes quite obscure, but present in all speci- 

 mens examined ; antennae and legs rufous, the latter often darker in part. Elytra 

 lightly reticulate, the meshes rather large, irregular throughout, with a secondary 

 micro-reticulate sculpture, most distinct toward sides arid apex ; minute punctules 

 within the thoracic meshes, but for the most part at the intersections of the 

 reticulating lines on the elytra. Prosternum angularly convex in cross section ; 

 metasternal sulcus very short, oblique and rudimentary. Pro- and mesotarsi of 

 male distinctly incrassate ; the protarsal claws both sinuate beneath, the anterior 

 one a little more noticeably so. Length 8 to 8.5 mm. 



This species occurs on the Pacific Coast from Southern California 

 (Claremont) to Vancouver, a large majority of the specimens seen 

 being from Northern California and Oregon. LeConte's type was 

 from Pont Reyes on the California coast just north of San Francisco. 



Confertus superficially looks a good deal like lugens, which occurs 



