COLEOPTERA. 187 



31. A. varipes n. sp. — Form as lb callosm. Pubescence rather coarse, 

 semi-erect, sparse, except on the abdomen where it increases in density 

 toward the tip, cinereous, rather conspicuous ; integuments highly polished. 

 Head moderate or rather small, distinctly more than twice as wide as long ; 

 labrum prominent ; interocular surface nearly three times as wide as the 

 eye, very feebly convex ; sulcations nearly obsolete ; intermediate surface 

 broad, very feebly convex, broadly impunctate in the middle; punctures 

 elsewhere rather coarse, deep, close, and irregular; supra-antennal tubercu- 

 lations elongated, impunctate ; antennae much longer than the width of head, 

 rather slender, piceo-testaceous, darker and opaque toward tip, translucent 

 toward the base, club slender; third joint fully one-third longer than the 

 fourth, fourth and fifth equal, sixth much longer than the seventh, the 

 latter slightly more robust, eighth very slightly longer than wide, joints of 

 club nearly cylindrical ; maxillary palpi long, first two joints and base of 

 the third very slender, third rapidly and very strongly enlarged toward tip, 

 no longer than the second, all piceo-testaceous ; the third joint is distinctly 

 darker above than beneath ; first joint one-half as long as the second. Pro- 

 thorax widest slightly in advance of the middle, where it is distinctly nar- 

 rower than long ; sides thence very feebly convergent posteriorly and rather 

 strongly sinuate throughout; anterior and posterior margins long, equal, and 

 nearly transverse; surface coarsely, closely, and deeply punctate, having a 

 rather large impunctate area in the middle of the disk. Elytra at base just 

 perceptibly wider than the head ; sides parallel, strongly arcuate, most 

 strongly so at two-thirds the length from the humeri, much longer than the 

 width at base; together rather narrowly and strongly emarginate behind: 

 suture about one-third longer than the pronotum ; surface feebly and rather 

 broadly impressed on the suture at the base, otherwise nearly evenly convex ; 

 punctures coarse, nearly evenly distributed, very deep, distant by about 

 their own widths, slightly variable in size ; interspaces convex. Abdominal 

 segments decreasing uniformly and rapidly in width, cylindrical, first very 

 slightly narrower than the contiguous elytra, each constricted rather strongly 

 at the base, border obsolete except on the first segment ; evenly, strongly, 

 and rather loosely punctulate ; transverse carinae finely and irregularly 

 undulated. Legs rather robust, basal half of femora, tibiae, and tarsi pale 

 flavo-testaceous, distal half of femora rather abruptly much darker, casta- 

 neous, tarsi robust; first joint of the posterior four-fifths longer than the 

 second, longer than and nearly twice as robust as the fifth ; fourth joints 

 bilobed, lobes rather short and robust. 



Male. — Posterior edge of the fourth ventral segment very broadly and 

 feebly emarginate in its middle two-fifths ; fifth roundly and feebly emargi- 

 nate in its middle third at apex, emargination about eight times as wide as 

 deep, contiguous surface flattened throughout anteriorly ; sixth segment 

 narrow, apex broadly and deeply sinuate, sinus occupying nearly the entire 

 apical width, evenly and rather broadly rounded at the bottom, nearly four 

 times as wide as deep, apices very narrowly, though evenly rounded ; lateral 

 setae of seventh segment very long and coarse, testaceous. 



Female. — Unknown. 



Length 3.0 mm. 



