ROLAND HAYWARD. 45 



28. A. angui^tata Say. — Form oval, convex. Color a?neous, shining. Head 

 scarcely narrower than the thorax at apex ; frontal grooves very short; antennae 

 slightly shorter than the head and thorax, slender, the first three joints and the 

 greater part at least of the fourth rufotestaceous, the outer joints darker; palpi 

 testaceous, the last joint darker. Prothorax about one-half wider than long, 

 narrowed from immediately in front of base to apex ; apex feebly emarginate ; 

 sides rounded, more strongly in front, the margin narrowly reflexed, the poste- 

 rior lateral setigerous puncture nearer the basal than the side margin ; transverse 

 impressions obsolete; median line distinct, abbreviated before and behind ; outer 

 basal fovea obsolete, the inner obsolete or feebly marked ; base truncate, the 

 basal margin extending about three-fourths the distance from side to middle ; 

 hind angles obtuse, rounded, not carinate. Elytra together not wider than the 

 thorax, narrowed behind, striate; striae entire, deeper behind, the scutellar stria 

 terminating at base in an ocellate puncture, the eighth with the row of ocellate 

 punctures interrupted at middle; intervals nearly flat. Body beneath black, 

 shining, impunctate. Legs testaceous; apical spur of anterior tibite with the 

 inner lobe acute. Length .22-. 32 inch ; 5.5-8 mm. 



Mo.st near]}' allied to pallipes, but distinct by the characters 

 given above. Its form is more convex than in that species, and the 

 elytra, which are not wider than the thorax, are more acuminate 

 at tip. 



The base of the thorax varies from impunctate to sparsely punc- 

 tured. The elytral striae also vary, and, while impunctate in the 

 majority of specimens, are occasionally sparsely punctate at base. 



It occurs from Canada and the New England States southward 

 to Virginia and westward to Kansas. 



29. A. pallipes Kirby. — Xearly oval, slightly convex. ^Eneous or nigro- 

 seneous. Head as wide as the thorax at apex ; frontal grooves short; antennae 

 slender, nearly as long as the head and thorax, piceous, the three basal joints and 

 usually the base of the fourth rufotestaceous; palpi rufotestaceous. Prothorax 

 about one-half wider than long, narrowed from slightly behind the middle to 

 apex; apex emarginate; sides arcuate in front, subparallel behind, the margin 

 narrowly reflexed, the posterior setigerous puncture in the hind angle and equi- 

 distant from basal and lateral margins; base bisinuate, the basal margin extend- 

 ing about two-thirds to middle; transverse impressions obsolete; median line 

 fine, abbreviated at each end ; basal impressions distinct, the outer fovea shorter 

 than the inner and usually slightly oblique; surface usually sparsely punctate at 

 base; hind angles sharply rectangular, not carinate. Elytra together very 

 slightly wider than the thorax, rather finely striate, not acuminate behind ; 

 striae entire, not deeper behind, at most obsoletely punctate, the .scutellar stria 

 terminating at base in an ocellate puncture, the eighth with the row of ocellate 

 punctures rather narrowly interrupted at middle; intervals flat. Body beneath 

 black, impunctate. Legs rufotestaceous, the tarsi slightly darker; apical spur of 

 the anterior tibia; with the middle lobe acute. Length .22-. 32 inch ; 5.5-8 mm. 



TR.\NS. AM. ENT. SOC. XXXIV. MARCH, liiOS. 



