LECONTE— SYNOPSIS OF PTEROSTICHUS. 229 



5. E. conviva, thorace non transverso, postice subangustato, tenuiter marginato, impressionibus ba?alibus 

 valde abbreviatis, elytris striato-punctatis, interstitiis planissimis. Long. -65. 



Alabama; Haldeman. Resembles E. sigillatus, but is narrower, the thorax is not 

 at all transverse, less rounded on the sides, and a little narrowed behind ; the margin 

 is very narrow and scarcely reflexed : the posterior transverse is almost entire, and 

 the basal impressions are deep, but so short as to cause only a slight undulation in 

 the transverse impression; the elevated ridge adjacent to the angle is very indistinct, 

 and the angle itself is much less obtuse. The elytra are not widened behind, the 

 striae are strongly punctured, and the interstices flat ; in the only specimen I have seen, 

 the scutellar stria is very distinct, but as this is not the case with any of the allied 

 species, I am inclined to consider it as abnormal. 



b. 

 Oblong, depressed species, closely related to the preceding division, but having the 

 thorax much more rounded on the sides, and narrowed behind, the posterior angles 

 are sometimes sharp and sometimes obtuse ; the posterior transverse impression well 

 marked; the basal impressions large and jdeep with two distinct strise, and the ridge ad- 

 jacent to the angle is very distinct ; the anterior transverse impression almost obso- 

 lete, the margin is narrow, not reflexed ; the marginal strise of the elytra are approxi- 

 mated : the strise are usually punctured, the scutellar stria sometimes distinct, and 

 sometimes punctiform, varying in the same species ; the seventh interstitial space is 

 slightly elevated at the base. 



6. E. v a g an s , nitidus, thorace angulis posticis obtusis, impressionibus basalibus vix rugosis, elytris pro- 



funde striatis, interstitiis planissimis. Long. -6. 

 Feronia vagans Lee. An. Lye. 4, 3.49. 



Ohio. I have never seen but one specimen of this species, which is narrower than 

 the next two, and has the elytral strise impunctured. 



7. E. orbatus, thorace lateribus postice sinuatis, angulis posticis rectis, prominulis, impressionibus basali- 



bus rugosis, elytris tenuiter striato-punctatis, interstitiis fere planis. Long. "68. 

 Feronia orhata Newman. Ent. Mag. 5, 386; Lee. An. Lye. 4, 348. 

 Feronia sodalis Lee. An. Lye. 4, 349. 



Middle and Southern States. The male is shining, the female dull black. 



8. E. cor ax, nitidus, thorace lateribus postice sinuatis, angulis posticis rectis prominulis, impressio:iibus 



basalibus rugosis, elytris profunde striatis, striis puuctulatis, interstitiis convexis. Long. -61. 

 Feronia [Nolops) corax Lee. An. Lye. 4, 347. 



I have only two males of this species ; they were found near Long's Peak. * 



c. 



More slender, somewhat depressed species, having the thorax very much rounded on 

 the sides, and much narrowed behind, with the posterior angles nearly obtuse and 

 sometimes rounded ; neither of the transverse impressions is distinct, and the basal 



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