March, 1896] W1CK.HAM, COLEOPTERA OF N. E. AxVIERlCA. 35 



Basal impressions of thorax distinct polita. 



23. Antennae and legs piceous black 24 



Antennae pale, legs usually so 25 



24. Elytra with silken lustre, intervals with more or less uneven surface, color vari- 



able interstitialis. 



Elytra shining, intervals flat, even, smooth erratica. 



25. Prosternum plurisetose at tip; metepisternum longer than wide at base, .obesa. 

 Prosternum bisetose at tip, sides of thorax distinctly deplanate, legs rufo-testa- 



ceous ; ^ shining, 9 opaque remotestriata. 



Prosternum without setae, sides of prothorax not deplanate 26 



26. Prosternum of <J with a small group of punctures 27 



Prosternum of $ smooth as in 9 28 



27. Form rather broadly oval, not twice as long as broad, legs rufo-testaceous. 



chalcea. 



Form oblong, twice as long as broad, thorax very broad, legs rufo-testaceous. 



gibba. 



28. Sides of thorax oblique behind, apex of scutellar stria united to first . . harpalina. 

 Sides of thorax not oblique behind the middle, scutellar stria free at apex .... 29 



29. Thorax distinctly emarginate at apex, front angles sharply prominent . subsnea. 

 Thorax nearly truncate at apex, anterior angles very obtuse 30 



30. Sides of metasternum and met-episterna coarsely punctate rubrica. 



Sides of metasternum and met-episterna smooth musculus. 



It will be noted that two species belonging to the sixth division 

 (^Lirus Zimm.), are omitted from the table, namely L.fidvipes Putz. 

 and L. canadensis Putz., no specimens being at hand for comparison. 

 The descriptions are intercalated in the proper place. 



A. avida Say. — Black or piceous, broad, oblong, thorax wide, 

 narrowed posteriorly, hind angles nearly rectangular, base with numer- 

 ous coarse punctures extending entirely across, basal fovese ill defined 

 though moderately deep. Elytral striae deep, distinctly punctured. 

 Antennae and legs rufous. Length 8-9.5 mm., = .3 2-. 38 in. 



Habitat : New York, New Jersey, Massachusetts, Illinois, Indiana, 

 Iowa. 



A. arenaria Lee. — Much smaller that the preceding, piceous 

 black, tip of abdomen reddish, legs, antennae and palpi rufous or rufo- 

 testaceous. Thorax with sides rounded, narrowed at base, median 

 longitudinal line deep ; the base is not punctured or only extremely 

 finely so, and the basal foveae are smooth. Elytra shining, striae mod- 

 eratety deep and scarcely visibly punctate. Length 6 mm. = .24 in. 



Habitat : New York (Buffalo), Mt. Washington, New Hampshire. 



A. similis Kirby. — Black or nearly so, shining, prothorax sub- 

 quadrate, narrower at base, sides rounded, margin reflexed, of uniform 



