PwOLAND HAYWARD. 55 



base, the eighth with the row of oceliate puuctures narrowly interrupted at mid- 

 dle; intervals nearly flat. Body beneath black, impunctate ; prosternuni rounded 

 at tip. Legs dark rufous; all the femora with two setigerous punctures along 

 the inner margin ; tarsi not gi'ooved on the outer side. Length .32 inch ; 8 mm. 



Ajiproaches most nearly A. cupreolata, from which it seems 

 iibundaiitly di.stinct by tlie form of the thorax, smaller head and 

 color of tlie legs. The posterior lateral setigerous puncture of the 

 thorax is even more distant from the side margin than in that species. 



Only one specimen, a male, is known to me. It is from Lake 

 Superior, and is in the LeConte collection at Cambridge. 



42. A. cupreolala Putz. — Oval, convex. Cupreo-seneous or more rarely 

 nigro-ffiiieous, shining, the females very finely alutaceous. Head slightly nar- 

 rower than the thorax at apex ; antennae shorter than the head and thorax, not 

 carinate, piceous, the three basal joints paler; palpi rnfopiceons. Prothorax sub- 

 quadrate, about oue-half wider than long, wider at base than apex, impunctate 

 or rarely ohsoletely punctured at base; apex deeply emarginate, the anterior 

 angles rounded but prominent; sides narrowed from about one-thiid in front of 

 base and rounded to apex, margin nariowly reflexed, the posterior setigerous 

 puncture distant from the side margin and distinctly nearer the basal ; transverse 

 impressions obsolete; median line fine, abbreviated in front; basal impressions 

 feeble and poorly defined ; base nearly truncate ; hind angles obtuse, rounded, 

 not carinate. Elytra not wider than the thorax, subparallel to behind the mid- 

 dle, striate; strise impunctate or rarely ohsoletely punctate, entire, the scutellar 

 stria not terminating in an oceliate puncture at base, the eighth with the row of 

 oceliate puiictures rather narrowly interrupted at middle; intervals flat or 

 nearly so. Body beneath black, impunctate; prosternum broadly rounded at 

 tip. Legs piceo-rufous, the femora usually darker; all the femora with two 

 setigerous punctures along the inner margin; basal joints of middle and hind 

 tarsi not grooved. Length .26-. 33 inch ; 6.5-8.25 mm. 



The posterior tibiae of the males are moderately densely pubescent 

 on the inner side. 



Superficially this species resembles most clo.^ely mjmncticollis, but 

 is at once recognizable from it by the absence of the oceliate punc- 

 ture at the base of the scutellar stria. From conflatu it is readily 

 distinguishable by the obtuse hind angles of the thorax, the position 

 of the posterior lateral seta, as well as by its less robust form and 

 the color of the legs. 



Examples have been seen in which the base of the thorax and 

 elytral strife are sparsely, ohsoletely punctate, but they are connected 

 by intergrades with the typical form. 



It is known to me from Canada, New Hampshire, Ma.ssachusetts, 

 New York, New Jersey, Pennsylvania, Illinois, Kentucky, Utah, 

 Nebraska, Kansas and Colorado. 



TR.\NS. AM. ENT. SOC;. XXXIV. MABCIl. 1908. 



