416 [Junjs 



Crust, et Ins. ix, p. 38S. 36. Gyll. Ins. Suec. ii, p. 428. 50. Germ. Faun. 

 Ins. Europ. xiii, p. 8. Boisd. et Lacord. Faun. Ent. Paris, i, p. 528. 1. 

 Mann. Brachelytr. p. 66. 1. Runde, Brachelytr. Hal. p. 28. 1. Erich. 

 Col. March, i, p. 354. 1 ; Staph, p. 163. 1. 

 Aleochara lustrica, Say, Trans. Am. Phil. Soc. iv, p. 46S. Lee. Say's Writ- 

 ings, ii, p. 585. 



Black, shining; antennae short, fusiform, their base and the legs ru- 

 fous; elytra shorter than the thorax, rufous, sides fuscous; abdomen 

 above sparsely punctured. Length 2 \— -3 lines. 



Var. — Elytra concolorous, base of antennae and the legs piceous. 

 Aleochara lata, Grav. Micr. p. 186. 2 ; Mon. p. 170. 57. 



Hah. — Europe and North America. 



Size variable, broad, black, shining; head and thorax somewhat 

 brassy, with sparse yellowish hairs. Antennas half again as long as 

 the head, thick ; second joint one-half shorter than the third, the fourth 

 joint narrower, scarcely transverse, joints 5 — 10 strongly transverse, 

 twice shorter than thick, equal, the two penultimate joints longer, equal, 

 subconical ; blackish-fuscous, the base rufous or rufo-testaceous, the 

 apex also sometimes reddish. Palpi rufous. Head much narrower 

 than the thorax, deflexed, sparsely punctured. Thorax one-half shorter 

 than broad, the base nearly as broad as the elytra; base and sides 

 rounded, narrowed anteriorly, all the angles obtuse, the anterior ones 

 deflexed ; moderately convex, densely and distinctly puncture 1. Elytra 

 a little shorter than the thorax, the exterior angles rounded, densely 

 and strongly punctured, the punctures obliquely impressed; rufous, the 

 sides fuscous. Abdomen parallel, the sides strongly and the disk less 

 closely punctured ; the two last dorsal segments, venter entirely or fre- 

 quently the apical margin, rufo-piceous, rarely concolorous. Legs ru- 

 fous; posterior femora sometimes more or less piceous. 



Varies by the thorax being entirely black, base of antennae and the 

 legs piceous, and the joints of the tarsi rufous. — Erichson. 



3. Aleochara bimaculata, Grav. 



Aleochara bimaculata, Grav. Micr. p. 187. 3; Mon. p. 170. 58. Say, Journ. 



Acad. Nat. Sci. iii, p. 157. Erich. Staph, p. 167. 17. Lee. Say's Writings, 



ii, p. 101. 



Black, shining; base of antennae, and the legs, rufo-piceous; elytra 



somewhat shorter than the thorax, each elytra with a large testaceous 



spot; sides of thorax densely and the abdomen above closely punctured. 



Length 2 lines. 



Hab. — Pennsylvania (Erich.); Fort Osage (Say). 

 Black, somewhat brassy, shining, clothed with sparse, depressed, ful- 

 vous pubescence. Antennae rather longer than the head, second joint 



