NORTH AMERICAN COLEOPTERA. 221t 



A. ag^iiatus Ericlis. — Form sleiuliT, elongate, piccoiis, shinino;; apifal margin 

 of elytra and legs testaceous ; antenniu shorter than tlie head and thorax, brownish, 

 two basal joints not conspicuously paler; liead quadrate oval, slightly narrowed 

 behind the eyes, sparsely punctate, median smooth space small; beneath coarsely 

 sparsely punctured; thorax as in nobrinus ; elytra not longer than the thorax, 

 more convex than in aohrivua, less coarsely and more sparsely punctate, apical pale 

 margin sharply defined : abdomen as in sobrinii.i. Length .10 — .IHinch; 4—4.5 

 mm. 



Male. — Anterior tarsi moderately dilatt'd : last ventral segment with small tri- 

 angular emargination. 



Female — Anterior tarsi narrowly dilated: last ventral entire. 



I owe the identification of this species to Mr. Fauvel. Tt resembles 

 sohn'nits very closely, and niiijht nuidily be niisttiken for it. The an- 

 tenna; are not pale at tip, the elytra shorter and less conspicuously punc- 

 tate. 



Occurs in our fiiuna in Louisiana, described by Erichson from (\jlum- 

 bia, S. A. 



A. pntolla. n. sp. — Piceous or brownish, form of chierascerr.H, legs brownish 

 testaceous; antcnnro ferruginous, shorter than the head and thorax, slender, joints 

 longer than wide; head quadrate oval, slightly narrower behind the eyes, coarsely 

 very sparsely punctate at the sides; beneath nearly smooth; thorax very little 

 wider than the head, but little longer than broad; sides very slightly sinuate; 

 surface very shining, the punctures not numerous, but disposed in three irregular 

 series on each side; elytra a little wider than the thorax and but little longer, con- 

 jointly nearly square, densely finely punctured, opaque, finely pubescent ; abdomen 

 opaque, very finely densely punctulate, finely pubescent; beneath more evidently 

 punctured than above, margins of the segments paler. Length .20 inch ; 5 mm. 



Male. — Anterior tarsi broadly dilated ; last ventral segment rather dei^ply, but 

 narrowly triangularly incised. 



Female. — Anterior tarsi slightly dilated; last ventral entire. 



This species has the same general form and appearance as cinn-axccn,'!, 

 but differs in the form and sculpture of the head and thorax. 

 Occurs in Michiiian and New York. 



A. loxiltus n. sp. — Black, shining, form broader than cmei-asrens, legs pice- 

 ous; aiiteiinie l)r((wnish. shorter than the head and thorax, sleAder, joints longer 

 than wide; head quadrate oval, shining, very few punctures at the sides: beneath 

 sparsely coarsely punctured, more opaque: thorax not wider than the head, nearly 

 as wide as long, slightly narrower behind; sides scarcely sinuate; surface shining, 

 punctures coarse, arranged in three irregular series; elytra wider than the thorax 

 and slightly longer, conjointly longer than wide; surface shining, moderately 

 closely punctate, sparsely pubescent; abdomen slightly opaque, the punctuation 

 indistinct, but not dense; beneath sub-opaque, the punctuation rather more dis- 

 tinct. Length .20 — .22 inch; 5 — 5.5 mm. 



Af«/e.— Anterior tarsi, moderately dilated; last ventral segment with a very 

 STnall triangular emargination. 



;o8) 



