252 LECONTE— SYNOPSIS OF PTEROSTICHUS. 



5. L. c e 1 e r , thorace ktitudine non breviore, antiorsum vix angustato, lateribus rotundatis, angulis posticis 



obtusis, basi utrinque brevius striate, vix punctato, elytris striis profundis punctulatis, macula communi 



postica, antennarumque articulo primo laete rufis. Long. -3. 

 Feronia [Argittor) celeris Dej. Sp. Gen. 3, 246. 

 Argutor celeris Lee. An. Lye. 4, 387. 



Georgia and Pennsylvania; very rare. My only specimen has the epipleurae 

 rufoas, but this is probably the result of immaturity. 



6. L. agilis, thorace latitudine subbreviore, antrorsum subangustato, lateribus rotundatis, angulis pos- 



ticis rectis rotundatis, basi parce punctato, utrinque breviter striate, elytris striis profundis subtiliter 



punctulatis, antennarum basi tibiis tarsisque rufis. Long. -S. 

 Feronia [Argutor) agilis Dej. Sp. Gen. 3, 244, 

 Argutor agilis Lee. An. Lye. 4, 338. 



Southern States. In the Annals of the Lyceum I erroneously quoted Argutor 

 femoralis Kirby, as a synonym. That species, however, having three dorsal punc- 

 tures, cannot belong to this genus. 



7. L. pusillus, thorace latitudine breviore, antrorsum subangustato, lateribus late rotundatis, angulis 



posticis subrectis rotundatis, basi utrinque breviter striato, elytris striis antice subtiliter punctulatis, 



antennarum basi pedibusque rufis. Long. -3. 

 Georgia; one specimen. This species has probably been confounded with L. 

 velox, from which it differs by the thorax being broader, narrowed in front, less 

 rounded on the sides and posterior angles. The striae of the elytra are distinctly 

 punctured as far as the middle ; the interstitial spaces are wider and more fiat than 

 is usual in this genus. 



8. L. velox, thorace latitudine subbreviore, antrorsum non angustato, lateribus magis rotundatis, angulia 



posticis rectis rotundatis, basi utrinque breviter striato, elytris striis antice punctulatis, antennarum 



basi pedibusque rufis. Long. -26. 

 Feronia (Argutor) velox Dej. Sp. Gen. 3, 245. 

 Argutor rectus'^ Lee. An. Lye. 4, 338. 



Pennsylvania ; rare. The strise of the elytra are deep, but the interstices are 

 moderately flat. 



8. L. taeniatus, thorace latitudine non breviore, antrorsum non angustato, lateribus late rotundatis, 



basi vix parce punctato, utrinque striato, angulis posticis rectis subrotundatis, elytris striis profundis 

 vix obsolete punctulatis, antennis pedibusque rufis, femoribus subtus nigro-maculatis. Long. -26. 

 Louisiana; Dr. Schaum. Resembles the next species in the form of the thorax, 

 but the general form is narrower. In the single specimen I have, the anterior trans- 

 verse line of the thorax is not visible. If this character be constant, it will enable 

 this species at once to be distinguished from ail the others, except L. crenatus. 



9. L. piciventris, thorace latitudine non breviore, antrorsum non angustato, lateribus late rotundatis, 



angulis posticis rectis subrotundatis, basi utrinque striato, elytris striis antice punctalatis, antennis pedi- 

 busque rufis. Long. -22. 

 Argutor piciventris Lee. An. Lye. 4, 337. 



