ROLAND HAYWARD. 27 



sions broiul, deep, bifoveate. the foveas subconfluent, punctate; sides witli the 

 raargiu distinctly retlexed. moderately rounded, rather feebly sinuate for a slioit 

 distance in front of the hind an^rles, whicli are rectangular and acutely carinate. 

 Elytra subparallel, together slightly wider than the thorax and less than twice 

 as long as wide, deeply striate; strise distinctly punctate to behind the luiddle, 

 the scutellar stria moderately long, the eighth with the row of ocellate punc- 

 tures widely interrupted at middle; intervals nearly flat. Body beneath piceous 

 or rufopiceous, ineso- and nietasternal episterua, sides of metasternuni and of the 

 first two ventral segments punctate. Legs rufous or rufotestaceous ; hind femora 

 •with two setigeious punctures along the inner margin ; taisi without grooves on 

 the outer side. Length .45-. 55 inch ; 11.25-13.75 mm. 



The males have the middle tihite normally dentate. 



Resembles latlcollis very closely, and, although typical examples 

 of each are readily distinguishable, many specimens occur which 

 are very nearly intermediate between the tw'o. As in that species 

 and in adstricta the middle femora have two or tiiree setigerous 

 punctures along the inner margin, tiie number differing sometimes 

 on the femora of the same individual. 



Its range of distribution is nearly the same as that of laticoUis. 

 It occurs in Nebraska, Kansas, North and South Dakota, Montana, 

 \yyoming, Colorado and Utah. 



10. A. rufiinana Kirby. — Form very elongate, nearly parallel, sliglitly 

 convex, the elytra slightly flattened on the disk. Color varying from nearly 

 black to piceous or rufopiceous, the elytra often with more or less metallic lustre. 

 Head nearly as wide as the thorax at apex ; frontal grooves distinct, short, not 

 extending on to the epistoma: antennae slender, nearly as long as the bead and 

 thorax, ferruginous; palpi ferruginous. Prothorax subcordate, more than one- 

 half wider than long, as wide at base as apex, widest slightly in front of the 

 middle, impunctate at apex, distinctly !>unctate at base, more or less transver.«ely 

 wrinkled along the median line; apex emarginate, the anterior angles rounded ; 

 transverse impressions feeble; basal impressifins broad, deep, distinctly bifoveate, 

 punctate; base feebly emarginate; sides with the margin narrowly reflexed, 

 arcuate, sinuate for some distance in front of the hind angles, which are promi- 

 nent, rectangular and acutely carinate. Elytra together slightly wider than the 

 thorax, about twice as long as wide, nearly parallel, deeply striate ; .striae entire, 

 distinctly punctate to behind the middle, the scutellar stria moderately long, the 

 eighth with the row of ocellate punctures broadly interrupted at middle; inter- 

 vals feebly convex; humeri scarcely rounded. Body beneath piceous or rufo- 

 piceous; meso- and nietasternal episterua and sides of metasternuni and of the 

 first two ventral segments impunctate or at most sparsely punctured. Legs 

 ferruginous; middle and hind femora with two setigerous punctures along the 

 inner margin ; tarsi not grooved externally. Length .45-. 50 inch ; 11.25-12.5 mm. 



The teeth on the middle tibif:e of the males are well marked, the 

 upper about the middle, the lower about midway between it and the 



TRANS. AM. KNT. SOC. XXXIV. FKBKUARY. 1908. 



