LECONTE— SYNOPSIS OF PTEROSTICHUS. 255 



Santa Isabel, California. The punctures of the elytra seem very variable; in one 

 specimen there are five on one side and four on the other; in a second there are two 

 on one side and three on the other. 



b. 



7. P. lucublandus, oblongus, subelliptieus, thorace antrorsum angustato, lateribus rotundatis, postice 



late depressis, angulis posticis subrectis, impressionibus basalibus minus profundis, exteriore brevissima, 

 elytris quadripunctatis, striis postice profundioribus, pectore punctato, antennarum articulis tribus ferru- 

 gineis. Long. *4 — -55. 



Kirby, Fauna Bor. Am. 4, 36; Lee. An. Lye. 4, 231. 



Feronia lucublanda Say, Trans. Am. Phil. Soc. 2, 55. 



Feronia [Poecilus) lucublanda Dej. Sp. Geo. 3, 212. 



Poecilus fraternus Say, Long's Exped. 2, 270. 



Patcilus dilatatus Lee. An. Lye. 4, 232. 



Poecilus castanipes Kirby, Fauna Bor. Am. 4, 37; Lee. An. Lye. 4, 232. 



Georgia, Lake Superior, Newfoundland, Rocky Mountains. Varies not only in 

 color (copper, brassy, greenish, purple, blue and black) but even in shape, being 

 sometimes decidedly elliptical ; the basal impressions of the thorax vary from smooth 

 to densely punctulate. The strise of the elytra are sometimes smooth, sometimes 

 finely punctured ; the feet vary from red to black ; finally, I have a specimen in 

 which one elytron has but two dorsal punctures. 



8. P. bicolor, oblongus, supra cyanescens, tborace antrorsum angustato, lateribus rotundatis, postice 



late depressis, basi obsolete punctulato, utrinque unistriato, angulis posticis rotundatis, elytris quadri- 

 punctatis, striis tenuibus, interstitiis convexis, antennarum articulis tribus pedibusque ferrugineis. 

 Long. -46. 

 Lee. An. Lye. 4, 232. 



One specimen, found near the Rocky Mountains. The depressed margin of the 

 thorax is still wider than in P. lucublandus ; the outer basal impression is entirely 

 wanting. 



9. P. eonvexicollis, oblongus, nitidissimus, supra nigro-seneus, thorace antrorsum angustato, lateri- 



bus rotundatis, postice depressis, angulis posticis subrectis, impressionibus basalibus vix punctatis, 

 exteriore brevi, elytris aeneis tripunctatis, striis profundis, antennarum articulis tribus ferrugineis. 

 Long. -35. 



Lee. An. Lye. 4, 233. 



Feronia eonvexicollis Say, Trans. Am. Phil. Soe. 2, 56. 



Feronia [Pcecilus) eonvexicollis Say, Trans. Am. Phil. Soc. 4, 424. 



One specimen, found at Sault St. Marie, Michigan. 



The following species from Atlantic North America are unknown to me : 



Feronia (Omaseus) carbonaria Dej. Sp. Gen. 3, 283. 

 Feronia (Platysma) ebenina Dej. Sp. Gen. 3, 307. 

 Omaseus tenebrosus Chaud. Bull. Mosc. 1837. 

 Feronia (Poecilus) atrata Newman, Ent. Mag. 5, 386. 



