134 NORTH AMERICAN 



length, long and acicular. Legs short and robust, piceous-blaek above, 

 dark pieeo-fuscous beneath ; first joint of the posterior tarsi two-thirds as 

 long again as the second, fifth much longer than the first ami more slender. 



Male. — Sixth ventral segment broadly and moderately sinuate at tip; fifth 

 not appreciably modified. 



/•'- mule. — Unknown. 



Length 2.6 mm. 



Detroit, Michigan, 1. 



I am not entirety certain of the sexual characters in this species, 

 owing to the mutilation of the type ; it is a very distinct species. 



113. S. lllOllticola n. sp. — Form moderately robust. Pubescence mode- 

 rately long, exceedingly fine and sparse, more plentiful on the abdomen, 

 cinereous. Head two and one-half times as broad as long; interocular sur- 

 face two and one-halt' times as wide as the eye, coarsely and quite regularly 

 punctate ; interspaces shining ; longitudinal elevation rather acute and above 

 the general level of the eyes, surface gradually declivous laterally to that 

 plane; ocular lines very short, meeting at about three lengths in advance: 

 antennae piceous-black, about equal in length to the width of head, club 

 rather large; third joint one-fourth as long again as the fourth, joints four to 

 eight gradually and uniformly decreasing in length, joints of club increasing 

 in length and thickness ; maxillary palpi short, piceous-black, base slightly 

 paler. Prothorax robust, widest at or slightly behind the middle, where it 

 is four-fifths as wide as the head, and just perceptibly narrower than long; 

 sides thence convergent posteriorly and feebly sinuate; posterior margin 

 shorter and slightly less arcuate than the anterior ; surface evenly convex, 

 coarsely punctate : punctures deeply impressed ; interspaces generally equal 

 in width to the punctures, highly lustrous. Elytra at base very slightly 

 narrower than the head ; sides very slightly divergent posteriorly and dis- 

 tinctly arcuate; together broadly, rather strongly, and evenly emarginate at 

 the base and apex ; suture just perceptibly longer than the pronotum ; sur- 

 face evenly convex, very coarsely, and somewhat distantly punctate ; punc- 

 tures deeply impressed and generally narrower than the interspaces, which 

 are highly lustrous. First three abdominal segments as wide as the elytra ; 

 border feeble; surface convex, lustrous, finely and distantly punctulate ; 

 transverse carinae 4-cuspid, cusps short, fine, expanded toward tip, intervals 

 feebly sinuate. Legs moderate, piceous-black, paler toward the tarsi : first 

 joint of posterior tarsi one-half as long again as the second. Under surface 

 of the abdomen piceous-black, moderately shining, very finely and closely 

 punctulate. 



Male. — Posterior edge of the sixth ventral segment broadly and evenly 

 emarginate in its middle two-thirds, emargination very feeble, evenly rounded 

 throughout. 



Female. — Sixth segment produced in the form of an exceedingly obtuse 

 angle. 



Length 2.3-2.6 mm. 



White Mountains, New Hampshire, 4. 



