380 PROCEEDINGS OF THE ACADEMY OF 



7 mm. Black ; prothorax and elytra testaceous, the former with a large 

 quadrate blacK spot, the latter with a dusky cloud divided by \he suture ; 

 body slender ; prothorax distinctly narrowed behind ; hind angles subrec- 

 tangular, slightly prominent, not rounded ; basal impressions broad, punc- 

 tured ; antenna} with joints 1 — 3 testaceous, legs testaceous. 



5. atrimedius. 



4-5 mm. Smaller, slender, ferruginous, upper surface pale, with the head 

 and disc of elytra somewhat darker ; prothorax distinctly narrowed behind ; 

 hind angles subrectangular, slightly prominent, not rounded ; basal impres- 

 sions broad punctured; antennae with the joints I — 3 or 4 paler. 



6. nebulosus. 



5-5 — 6 5 mm, Black, shining, not iridescent; prothorax with the hind 

 angles rectangular ; basal impressions linear, strongly marked, smooth, or 

 scarcely punctured ; anterior transverse impression distinct, strongly angu- 

 lated ; upper part of tibia; and 1st joint of antennae dark testaceous. 



1. ni g r i n u s. 



5 mm. Smaller than nigrimis, with the hind angles of prothorax distinctly 

 obtuse, but not rounded ; otherwise not different ; perhaps only an individual 

 variation 8. tibialis. 



B. 



Species of small size with the scutellar stria very short, or altogether 

 wanting ; front tarsi of male moderately dilated, middle tarsi not dilated nor 

 furnished with squamiform papilliB. 

 a. Striae of elytra perfect. 



* Head finely and sparsely punctured behind. 



5 mm. Black or piceous shining; prothorax wider than long, slightly 

 narrowed behind, much rounded on the sides ; hind angles rounded ; basal 

 impressions well marked, feebly punctulate ; elytra with the humeri and 

 sometimes the sides paler brown ; base of antennae brown... 9. axillaris. 



4-5 — 5 mm. Blackish, with the first joint of antennae, feet and elytra more 

 or less testaceous ; prothorax at^ tip and base sparse punctured, formed as 

 in the preceding, but less rounded at the sides and hind angles; basal im- 

 pressions well marked ; elytra (when pale marked with a dusky dorsal cloud, 

 when dark, with the suture and sides paler,) thinly clothed with short pubes- 

 cence near the sides and tip ; intervals usually sparsely and distinctly punc- 

 tured at the sides, base and tip ; (a. larger aud broader, testaceous, trunk 

 dusky; elytra scarcely punctulate, B. nitens Lee.) 10. cognalus. 



* * Head not punctulate ; basal impressious of prothorax feeble. 

 f Basal impressions of prothorax smooth. 



5 mm. Black, 1st joint of antennae and feet testaceous yellow ; prothorax 

 much ro\inded on the sides, slightly narrowed behind ; hind angles obtuse, 

 scarcely rounded ; basal impressions very feeble ; scutellar stria entirely 

 wanting 11. c o r d i c o 11 i s. 



■j- -j- Basal impressions of prothorax punctulate ; scutellar stria represened 

 by a puncture at the base of the 2d stria. Body elongate. 



4 — 4 5 mm. Dark reddish testaceous, trunk black, antennae with first two 

 joints pale ; prothorax a little wider than long, narrower behind, sides ob- 

 lique near the base, but not sinuate ; hind angles obtuse, almost rounded, not 

 at all prominent ; basal impressions broad, shallow, sparsely punctured ; (only 

 differs from the next by the hind angles of the thorax not being prominent, 

 and is probably a race of ib.) 12. congener. 



4 — 4-5 mm. Usually testaceous, sometimes piceous, with pale margins ; 

 Vjase of antennae and feet yellow ; prothorax a little wider than long, nar- 

 rowed behind ; sides subsinuate very near the hind angles, which are obiuse 



[Pee 



