AMERICAN PHILOSOPHICAL SOCIETY. 481 



It was brought from Missouri by Mr. Nuttall, and is very rare 

 in Pennsylvania. 



[Belongs to Amphasta Newman, and was described by him as 

 A. fulvicollis ; it is also the Harpalus ohscuripennis Dej. — Lec] 



40. F. OBSOLETA. — Totally deep black, immaculate, impunc- 

 tured, glabrous. 



Length one-fourth of an inch. 



Body black, glabrous, impunctured ; antennse at base deep 

 blackish-piceous; thorax narrower than the elytra, rounded, rather 

 wider before [58] the middle, hind angles slightly projecting, 

 the edge not excurved, base impunctured, dorsal line obsolete, 

 basal line wanting ; elytra, striae obsolete or slightly impressed, 

 impunctured ; feet black-piceous ; tibiae rather lighter. 



Seems to belong to the genus Argutor. 



\_K Platymts, afterwards described as Agonum luctuosum Dej. 

 — Lec] 



41. F. PDNCTiFORMis. — Black J thorax rounded behind, basal 

 lines punctiform ; elytral striae punctured. 



Length seven-twentieths of an inch. 



Body black, glabrous ; antennae brown, piceous at base ; palpi 

 blackish ; thorax, lateral curve regularly rounded, posterior angles 

 very obtusely rounded, dorsal line obsolete, basal lines each in 

 the form of a dilated puncture, base impunctured ; elytra, striae 

 slightly punctured, interstitial lines depressed, third one with 

 three remote punctures ; pectus and postpectus impunctured : 

 feet black ; tibiae and tarsi blackish-piceous. 



Probably referable to the genus Argutor. 



[Also a Flati/nus, and subsequently described as Agonuvi 

 nifipes Dej., and A. foveicolle Chaud. — Lec] 



42. F. RECTA. — Piceous-black ; antennae, palpi, and feet 

 rufous ; thoracic impressed lines very distinct, posterior angles 

 rounded. 



Length rather less than three-fifths of an inch. 



Body piceous-black, glabrous, beneath rather paler; antennae 

 brownish, base and palpi rufous; labrum piceous; thorax as 

 broad as the elytra, edge regularly curved, posterior angles ab- 

 ruptly rounded, base impunctured, dorsal line very distinct, basal 

 1823.] 31 



