(JOLEOPTEKA. 195 



convergent anteriorly and posteriorly, slightly arcuate in the former, nearly 

 straight in the latter direction ; anterior and posterior margins equal in 

 length, the latter very slightly the more arcuate ; surface rather feebly and 

 transversely impressed just behind the apex, otherwise evenly convex ; 

 punctures rather small, even, round, distant by nearly their own widths ; 

 interspaces moderately convex. Elytra at base distinctly wider than the 

 head; sides extremely feebly divergent posteriorly, equal in length to the 

 width at base, strongly arcuate ; together broadly, roundly, and strongly 

 emarginate behind ; suture one-fourth longer than the pronotum ; surface 

 very convex, broadly and very feebly impressed along the suture ; punctures 

 rather coarse, even, round, deeply impressed, distant by their own widths ; 

 interspaces very convex. Abdominal segments decreasing at first rather 

 rapidly, then more slowly in width, cylindrical, first very slightly narrower 

 than the contiguous elytra; surface rather closely and evenly punctate; 

 punctures as large as those of the pronotum, distant by slightly more than 

 their own widths ; interspaces convex ; transverse carinae not cusped, finely 

 and strongly undulated posteriorly. Legs short and slender, femora piceous- 

 black above, dark fuscous beneath, tibiae dark fuscous, distal extremity and 

 tarsi very slightly paler, the latter slender ; first joint of the posterior nearly 

 as long as the next two together, shorter than the last ; claws strongly cur- 

 vate, slender, abruptly enlarged at the base. 



Male* — Unknown. 



Female. — Sixth ventral segment broadly rounded behind. 



Length 2.9 mm. 



White Fish Point, Lake Superior, 4. 



This species can be distinguished from Habbardi and punctatus by 

 its relatively much more robust form and smaller head. In addition 

 it differs from the first in its relatively shorter elytra, which are also 

 much more strongly emarginate behind, and from the latter, in its 

 dark legs and antennae, relatively shorter, more robust prothorax, 

 and more convex elytra. 



40. A. pert ill ax n. sp. — Fusiform, robust. Pubescence cinereous, short, 

 semi-erect, coarse, uniformly distributed, rather conspicuous. Head very 

 small, twice as wide as long ; interocular surface twice as wide as the eye, 

 very feebly convex ; punctures uniformly distributed, coarse, round, deeply 

 impressed, distant by less than their own widths ; interspaces narrow, con- 

 vex and polished ; sulcations almost obsolete ; ocular lines meeting at about 

 one length in advance ; antennae much longer than the width of head, testa- 

 ceous, club very slightly darker ; third joint scarcely one-fourth longer than 

 the fourth ; maxillary palpi very long, piceo-testaceous, first joint paler, third 

 nearly as long as the first two together. Prothorax arcuately, evenly, and 

 rapidly increasing in width to the middle, where it is about as wide as long 

 and but slightly narrower than the head ; sides thence feebly convergent 

 posteriorly and sinuate ; posterior angles prominent ; anterior margin slightly 

 shorter than the posterior, equally and distinctly arcuate ; surface trans- 

 versely and feebly impressed just behind the apex, otherwise evenly convex ; 



