26 AMKRICAN COLEOPTERA. 



8. A. laficolliK Lee— Nearly oblong, rather broad, slightly convex, the 

 elytra slightly flattened on the disk. Color varying from piceoiis to nearly 

 black, shining, the females more or less alutaceoiis. Head nearly as vride as the 

 thorax at apex ; frontal grooves short, anteriorly not extending on to the epis- 

 toma; antennse slender, shorter than the head and thorax, rufous; palpi rufous. 

 Prothorax subquadrate, more than one-half wider than long, as wide at base as 

 apex, distinctly emarginate at apex, slightly so at base, the anterior angles 

 prominent, strongly rounded ; ap)ex varying from sparsely to .scarcely perceptibly 

 punctate; base punctate; transverse impressions moderate; median line dis- 

 tinct, abbreviated in front; basal impresssion broad, deej), bifoveate, the foveas 

 punctured ; sides strongly arcuate, strongly sinuate behind, the margin narrowly 

 reflexed : hind angles subacute and acutely carinate. Elytra together very 

 slightly wider than the thorax and less than twice as long as wide, oblong-ovate, 

 deeply striate; strise punctate to behind the middle, the scutellar stria moder- 

 ately long, the eighth with the row of ocellate punctures broadly interrupted at 

 middle; intervals nearly flat. Body beneath piceous, the inflexed portion of the 

 elytra usually dark rufous; sides of metasternum, metasternal episterna and 

 sides of first two ventral segments sparsely or scarcely at all punctate. Legs 

 dark rufous; two setigerous punctures along the inner margin of the hind 

 femora; tarsi not grooved externally. Length A5-.57 inch ; 11.25-14.25 mm. 



Ill the males the inner side of the middle tibise is normally dentate. 



One of our largest species. It is very closely allied to addrida 

 and carinata. From the former it differs by its less convex and less 

 elongate form and by the form of the thorax, of which the hind 

 angles are less acute. From carinata, on the other hand, it differs 

 by the sides of the thorax being more strongly rounded and more dis- 

 tinctly sinuate in front of the hind angles, the thorax is less deeply 

 emarginate at apex and more distinctly so at base than in the latter 

 species, wliile it is less deeply emarginate at base than in adstricta. 

 The hind angles are more acute and more promineijt than in cai-i- 

 nata, and the form usually slightly less elongate. The three species- 

 are very difficult to define. 



Specimens have l)een seen from Manitoba, Assiniboia, Nebraska, 

 Norlli Dakota, Colorado, Wyoming, Montana, Utah, Arizona and 

 New Mexico. 



9. A. csiriiiaia Lee. — Nearly oblong, slightly elongate, feebly convex, the 

 elytra slightly thitlened on the disk. Color piceous or rufopiceons, shining, the 

 females slightly alutaceous. Head scarcely narrower than the thorax at apex ; 

 frontal grooves short, moderately deep, not extending on to the epistoma ; an- 

 teunif slender, scarcely as long as the head and thorax, rufous; palpi rufous. 

 I'rothorax about one-half wider than long, subquadrate, as wide at base as aj)ex, 

 sparsely punctate at apex and more densely so at base; apex very distinctly 

 emarginate, the anterior angles rounded, moderately prominent; transverse 

 imp'«ssions feeble; median line fine, distinct, abbreviated in front; basal impres- 



