190 ' NORTH AMERICAN 



AXTHICUS Payk. 



A. facilis n. sp. — Moderately slender, black throughout, legs and an- 

 tennae very dark piceo-testaceous ; pubescence somewhat coarse, sub-erect, 

 rather long and dense, pale fulvous in color ; integuments polished. Head 

 moderate in size, slightly wider than long, truncate behind ; sides behind 

 the eyes parallel and feebly arcuate ; basal angles moderately rounded, 

 prominent ; eyes small, convex, rather coarsely granulated, at more than 

 their own length from the base ; interocular surface convex, fiuelj' deeply 

 and evenly punctate ; antennae two-thirds longer than the head, slender, 

 basal joint one-half longer than wide, joints two to six equal in width, 

 elongate, narrower than the first, nearly equal in width, seven to eleven 

 abruptly wider, equal, in width, forming a slightly prominent five-jointed 

 club, joints seven to ten equal, slightly wider tlian long, eleventh longer, 

 acuminate. Prothorax widest at less than one-third its length from the 

 apex where it is slightly narrower than long; sides here strongly arcuate 

 and convergent to the apex, less convergent and feebly sinuate to the base ; 

 apex prolonged slightly as a narrow transverse band but slightly more than 

 one-half as long as the base, the latter broadly arcuate ; disk strongly 

 convex, slightly narrower than the head, finely vt^ry deeply and somewhat 

 unevenly jjunctate ; punctures round, perforate, interspaces flat, polished. 

 Scutellum very minute. Elytra at base distinctly wider than the head ; 

 sides parallel and slightly arcuate for four-fifths the length from the base ; 

 together obtusely rounded at tip, leaving the tip of the last ventral segment 

 and pygidium exposed ; inner apical angles sliglitly rounded ; disk twice 

 as long as wide, broadly convex, sliglitly impressed along the suture near 

 the base, coarsely very deeply and rather densely punctate ; punctures 

 round, perforate toward the base, becoming impressed and more fseble near 

 the apices. Abdomen alutaceous, feebly shining, extremely minutely and 

 feebly punctulate toward the base, finely and sparingly pubescent ; hairs 

 cinereous and recumbent ; first segment in the middle nearly as long as the 

 next three together ; metasternum rather coarsely and very deeply punctate. 

 Legs slender ; first joint of the posterior tarsi as long as the remainder ; 

 claws small, slender. Length 1.8 mm. 



Near Chester, Pennsylvania, 3. 



Taken under riil)bish on the sliores of the Delaware River in 

 early spring. It is easily tlistinsriiislied by its small size, black color, 

 and coarse deep and dense punctuation. 



RnVNCHITES llerbst. 



R. liaso n. sp. — Form rather slender. Color above intense black, be- 

 neath bluish-black, legs same, tarsi not paler, antennae slightly paler and 

 piceous toward base, black toward tip. Pubescence fine, short, rather sparse, 

 semi-erect, longer and coarser but more sparse on the alidomen, more dense 

 and cinereous on the tibiae and tarsi. Head rather longer, slightly wider 

 than long, rather convex, deeply coarsely and closely ruguloso-puuctate ; 

 eyes rather large and slightly prominent, somewhat finely granulated ; 



