COEEOPTERA. 125 



and highly polished. Elytra at base slightly narrower than the head ; sides 

 feebly divergent posteriorly, much longer than the width at base, very feebly 

 arcuate, most strongly so posteriorly ; together broadly, roundly, and mode- 

 rately emarginate behind ; suture rather more than one-fourth as long again 

 as the pronotum ; surface very feebly impressed along the suture, more 

 strongly so toward the base; rather finely, moderately closely, and evenly 

 punctate; punctures round and impressed, closely crowded and polygonal 

 mar the inner basal angles and along the suture, but apparently never 

 coalescent. Abdominal segments decreasing uniformly and somewhat rapidly 

 in width, first distinctly narrower than the contiguous elytra ; surface rather 

 convex, coarsely, and rather closely punctulate, becoming more finely so 

 toward the tip ; apices of the segments impunctate ; transverse carinae not 

 cusped. Legs rather long, dark fuscous above, much paler fusco-testaceous 

 beneath, femora stout ; first joint of the posterior tarsi two-thirds as long 

 again as the second, distinctly shorter than the fifth, second much longer 

 than the third, third slightly longer than the fourth, fifth slightly narrower 

 at the base than at the apex. 



Male. — Fifth ventral segment not appreciably modified ; sixth very broadly 

 sinuate at apex, sinus occupying nearly the entire apical width, evenly 

 rounded throughout, from ten to twelve times as wide as deep ; seventh very 

 broad at apex, where it is moderately emarginate, bottom of emargination 

 transverse. 



Ft male. — Unknown. 



Length -2.2 mm. 



Locality uncertain. 



The antennae are missing. The species is quite distinct and is 

 probably from Michigan. 



103. S. liaplllS n. sp. — Form slender. Pubescence short, sparse, and 

 moderately coarse, pale flavo-cinereous on the head, pronotum, and elytra, 

 shorter, more recumbent, and cinereous on the abdomen. Head moderate, 

 twice as wide as long ; interocular surface flat, nearly two and one-half times 

 as wide as the eye ; closely and rather coarsely punctate ; sulcations scarcely 

 visible ; punctures sub-variolate ; antennae about equal in length to the 

 width of head, rather slender, dark blackish-piceous, coarsely setose, club 

 moderate or small ; third joint one-fourth as long again as the fourth, joints 

 three to six uniformly and gradually decreasing in length, last two joints 

 much larger than the ninth, equal in thickness, eleventh acuminate at tip. 

 Prothorax widest just behind the middle, where it is notably wider than the 

 interocular surface, and slightly narrower than long ; sides thence moderately 

 convergent posteriorly and strongly sinuate'; anterior and posterior margins 

 equal in length, equally though feebly arcuate ; surface evenly convex, 

 closely and evenly punctate; punctures small, regular, and somewhat vario- 

 late ; interspaces one-half as wide as the punctures, polished. Elytra at base 

 just perceptibly narrower than the head ; sides but very slightly divergent 

 posteriorly, straight in the middle three-fourths ; together broadly and feebly 

 emarginate behind ; suture one-sixth as long again as the pronotum ; surface 

 ather evenly convex and evenly punctate ; punctures similar to those of 



