AMERICAN COLEOrTERA. 119 



inipunotured. Body beneoth variable in color, as tbe upper surface, but paler, 

 legs rufous. Length .18 — .22 inch; 4.5 — 5.5 nun. 



I have united with ruricola the species described by Haldeman and 

 Harold, for the reason that I have been unable to detect any character 

 that is of sufficient moment to define their difference. A. axrclianus, 

 Harold, is an exact reproduction of Haldeman'sr?<r?«s-, and differs only 

 from the types found in Pennsylvania in its ratlier larger size, darker 

 color and (hardly appreciably) less densely punctured head and thorax. 

 To be convinced that these are of no value, it is only necessary to con- 

 sult a large series, or to place these differences parallel with those 

 which are well known to occur in the still more widely diffused (jran- 

 arius. 



The females are much more rare than the males, and have the an- 

 gles on each side of the clypeal emargination more prominent and 

 acute. 



A. congregatus, Mann. Bull. Mosc. 1S53, iii, 210. Harold, Berl. Zeitshr. 

 18fi3, .362. — Oblong, moderately convex, shining, piceous-black, elytra reddish- 

 testaceous, with a broad lateral margin, scutellar space and broad sutural band 

 darker. Head distinctly trituuberculate, anteriorly. coarsely punctured and ru- 

 gose, prosteriorly punctured; clypeus feebly emarginate, with the angles on 

 each side broadly rounded and brownish-ferruginous. Thorax moderately 

 convex, smooth, with entire surface punctured with fine and coarse punctures, 

 more densely placed near the sides, lateral margin dark ferruginous. El^'tra 

 feebly striate, distinctly punctured ; interstices nearly flat, slightly punctulate. 

 Body beneath piceous, mesosternum strigose, legs rufo-testaceus. Length .22 

 inch ; 5.5 mm. 



A species easily recognisable by the color of elytra, and sculpture of 

 mesosternum. 



Occurs in Russian America. Typical specimens from the hand of 

 Mannerheim are before me. 



A. foetidus, Fab. Ent. Syst. i, 40. Harold, Berl. Zeitchr. 18G3, 364. tenellus, Say, 

 Journ. Acad. Ser. I, vol. iii, p. 213. 



An introduced i^pecies, and by no means abundant in this county. 

 The characters given in the table will sufhce to render it known when 

 found. The mesosternum is punctured. Length .20 inch ; 5 mm. 



Occurs in the Middle States. 



A. arcticus. Harold, Berl. Zeit. 1863,301. — " Convex, elongate oval, piceous- 

 black, shining; anterior angles of thorax and apices of elytra rufous. Head 

 narrowed in front, punctured, and toward the margins rugulose, front trituber- 

 culate, clypeus emarginate at middle, genre moderately prominent. Thorax 

 with sides rounded, finely but remotely punctured, disc almost smooth, at 

 sides with coarser punctures intermixed, base on each side sinuate. Elytra 

 behind the middle slightly dilated, punctato-striate, interstices flat, subseri- 



