96 NORTH AMERICAN 



slight tendency to flattening ; sixth segment very broadly sinuate at apex, 

 sinus occupying the entire width of the segment, feebly and evenly rounded 

 throughout, about twelve times as wide as deep. 



I'< inula. — Unknown. 



Length 2.8 mm. 



Cedar Keys, Florida, 1. 



The second joint of the tarsus is unusually long. 



75. S. COlonilS Erichs.- — Form rather slender. Pubescence sparse, a 

 little more dense at the sides and toward the vertex of the abdomen. Head 

 robust, less than twice as wide as long ; interocular surface flat, distinctly 

 less than twice as wide as the eye; punctures very close, small, evenly dis- 

 tributed ; longitudinal elevation a little broader than the lateral portions, 

 feebly and evenly convex ; ocular lines meeting at two lengths in advance : 

 antennae as long as the width of head, basal joint black, remainder moder- 

 ately pale piceons-brown, slender, club small ; third joint two-fifths as long 

 again as the fourth, fourth and fifth sub-equal in length, fifth but very 

 slightly shorter than the third, six and seven equal in length, the latter 

 thicker, eighth slightly thicker than the seventh, distinctly elongated, ovu- 

 late, joints of club increasing in length, last, two of equal thickness ; maxil- 

 lary palpi rather short, first joint and base of the second pale testaceous, 

 remainder dark piceous-brown. Prothorax widest slightly behind the mid- 

 dle, where it is live-sixtbs as wide as the head, and distinctly narrower than 

 long ; sides thence moderately convergent posteriorly and very feebly sinuate : 

 anterior margin very slightly shorter and more arcuate than the posterior ; 

 surface finely, very closely, confusedly punctured; punctures isolated in the 

 centre, very crowded and confused toward the base. Elytra at base about 

 as wide as the head ; sides moderately divergent posteriorly, longer than the 

 width at base, feebly arcuate, more strongly so behind ; together broadly and 

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

 surface rather convex, narrowly impressed along the suture, particularly 

 toward the base ; rather coarsely, feebly, and irregularly punctate ; inter- 

 spaces narrow and shining; channels neither long nor well-marked. Abdo- 

 minal segments decreasing uniformly and moderately rapidly in width, first 

 very slightly narrower than the contiguous elytra ; surface rather convex, 

 somewhat finely and evenly punctulate ; punctures of fifth segment much 

 finer and closer ; transverse carinae 4-cuspid, cusps equal in length, equi- 

 distant, rather long, and finely aciculate. Legs moderate in length, some- 

 what slender, pieeous-black above and beneath, tarsi paler; first joint of 

 posterior tarsi one-half as long again as the second, much shorter than the 

 last, second and third sub-equal, fourth shorter, fifth gradually narrowed 

 toward the base. 



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

 at apex, broadly sinuate, sinus very much wider and more feeble in curva- 

 ture than the apices, evenly rounding throughout, eight or nine times as wide 

 as deep, lateral setae of seventh segment absent. 



/•'. mule. — Sixth segment very broadly truncate at apex, truncation feebly 

 arcuate anil just perceptibly produced in the middle. 



Length 3.0-3.4 mm. 



