104 NORTH AMERICAN 



feebly arcuate, lateral broadly impressed, rather long ; humeri and basal 

 foveae strong. Abdomen scarcely narrower than the elytra ; sides parallel 

 and straight ; border strong and flat ; surface broadly convex, first three 

 dorsal segments equal ; first two having two nearly parallel narrow and 

 rather distant carinae through nearly their entire length which are very 

 strong and prominent, also very slightly incurvate at tips. Legs long and 

 slender. Length 1.(5 mm. 



South Carolina, 1 % • 



A clear description of the very wonderful sexual characters in the 

 male of this species is very difficult. Tiie third ventral segment is 

 broadly and feebly emarginate in its middle third at apex, with the 

 lateral angles of the emargination swollen and feebly and roundly 

 produced, the surface bordering the same impressed ; from under the 

 third segment two strong widely divergent distant spines protrude, 

 extending along the surface of tlie fourth and almost contiguous with 

 it ; they are slightly incurvate' at the lips and very acute. Tiie fourth 

 segment is very strongly and acutely sinuate anteriorly in the middle, 

 broadly roundly and very strongly emarginate througliout its width 

 posteriorly; having in the middle and dividing it equallji in width 

 two small strong tubercles. Fifth segment also strongly emarginate 

 throughout posterioj-ly and having its surface very broadly impressed, 

 the impression having a small impressed puncture at each lateral ex- 

 tremity ; the sixth segment is abruptly very strongly convex, feebly 

 and roundly produced posteriorly, obtusely angulate anteriorly, slightly 

 wider than long, rather strongly carinate througliout its length in the 

 middle. 



The species is one of the largest and finest of the genus and is very 

 distinct in all its characters. 



S. E. spiiiifer n. sp. — Form somewhat robust. Pubescence fine, close, 

 rather si)arse and inconspicuous. Color throughout rather dark reddish- 

 ferruginous, legs slightly paler ; integuments highly polisheil and impunc- 

 tate. Head rather large, slightly wider than long ; eyes rather large and 

 moderately prominent; genae prominent, almost parallel, longer than the 

 eye; base broadly and very feebly sinuate ; inteiocular surface having two 

 rather small circular spongy-pubescent foveae at more than two-fifths the 

 length from the base opposite the anterior third of the eyes, mutually two- 

 thirds more distant than either from the eye, connected by an anteriorly 

 arcuate parabolic impressed channel, rather acute and longitudinally ex- 

 panded anteriorly and slightly longer than the width at the foveae ; inter- 

 mediate surface strongly convex, bearing at the base of the occiput an 

 elongated canalicular puncture ; supra-antennal tuberculations very large 

 and prominent, roundly angulate externally and Joiued by a rather promi- 

 nent slightly arcuate ridge, much depressed in the middle; antennae about 

 one-half longer than the head, rather slender, club somewhat short and 

 robust, ninth joint slightly longer tlian the eighth, twice as wide as long. 



