COLEOPTEKA. 159 



prothorax and elytra together, all the joints elongated, basal joint as long as 

 the next two together, second shorter than the third, eleventh nearly cylin- 

 drical. Prothorax small, much narrower than the head, widest at the apical 

 angles where it is distinctly broader than long ; sides feebly convergent 

 posteriorly, sinuate in the middle ; anterior angles acutely rounded, poste- 

 rior very broadly so ; apex broadly and moderately arcuate, base truncate 

 and just perceptibly sinuate in the middle; disk highly polished and im- 

 punctate, very convex, more so anteriorly than posteriorly. Elytra at base 

 distinctly narrower than the head and slightly wider than the prothorax ; 

 sides feebly divergent posteriorly, much shorter than the width at base, 

 evenly and feebly arcuate ; together broadly, angularly and extremely feebly 

 emarginate behind ; inner apical angles not rounded, outer very acute and 

 well-marked ; suture and scutellum together equal in length to the protho- 

 I'ax ; disk highly polished and impunctate. Scutellum very small, rounded 

 behind. Abdonninal segments increasing arcuately and gradually in width 

 to the fourth which is very slightly wider than the fifth, first as wide as the 

 contiguous elytra ; border very strong, thin, nearly vertical, slightly less 

 strong on the fifth, feeble on the sixth segment ; surface highly polished 

 and impunctate. Legs slender, uniform in color tViroughout; tarsi slender ; 

 claws moderately long. 



Mule. — Sexual luodifications of the same character as in the preceding 

 species, the edge of the emargination of the sixth segment being much less 

 strongly reflexeil, longer, more feeble in curvature, and having the emargina- 

 tion of the membranous portion much stronger and less transverse ; seventh 

 segment deeply impressed, with no appearance of the lateral arched laminae, 

 the edges of the impression being in the form of rounded ridges ; eighth 

 deeply impressed, acute at tip. 



Female. — Unknown. 



Length 3.0 mm. 



Louisiana, 1. 



Tlie above type is very distinct in all of its characters and cannot 

 be confounded with any other species of the genus. 



6. A. analis Lee. — Form somewhat robust. Entire body, legs and base 

 of the antennae pale testaceous ; head more reddish ; last three segments of 

 the abdomen above and beneath and the metasternum piceous. Pubescence 

 consisting of a few widely scattered long erect setae which are more sparse 

 on the head and pronotum. Head rather large, depressed, moderate in size ; 

 eyes scarcely prominent; sides behind them feebly convergent and arcuate; 

 broadly truncate behind ; posterior angles broadly rounded ; upper surface 

 highly polished and impunctate ; supra-antennal tuberculations rather nar- 

 row, strong, elongated and parallel ; surface between them feebly and evenly 

 coiivex, having in the middle an elongated and prominent puncture; no 

 puncture at the posterior extremities of the tuberculatijns ; antennae but 

 very slightly longer than the head and prothorax together, slightly infus- 

 cate toward tip, basal joint scarcely as long as the next two together, second 

 much shorter than the third which is slender and nearly twice as long as the 

 fourth, joints rather abruptly thicker after the fourth, eleventh most robust, 



