AMERICAN PHILOSOPHICAL SOCIETY. 575 



5. S. QUADRIPUNCTATUS.— Black, punctured ; thorax hexa- 

 gonal, inequal. 



Inhabits Missouri. 



Body deep black, immaculate, profoundly and densely punc- 

 tured ; mouth testaceous ; palpi black ; thorax hexagonal, the 

 lateral edge projecting into an angle in the middle, disk with 

 four dilated, indented spots, placed in quincunx, with a slightly 

 elevated line between them, one or two obsolete, indented spots 

 near the lateral angle ; abdomen, pectus and postpectus impunc- 

 tured, the former with short hairs ; feet piceous. 



Length more than one-tenth of an inch. 



Found at Engineer Cantonment. It has a somewhat different 

 aspect from the preceding species. The eyes are not quite so 

 large, and the three last joints of the antennae are not so remark- 

 ably larger than the others. 



OXYPORUS Fabr. 



0. STYGICUS. — Black; tarsi rufous. 

 Inhabits Indiana. 



Body black, polished ; antennae 2-5 joints rufous ; labrum ru- 

 fous ; palpi honey -yellow; thorax with the lateral deflected mar- 

 gin indented ; [460] elytra entirely black ; a subsutural striae, 

 and an abbreviated one on the middle, near which is another ob- 

 solete one, and many rather large distant punctures; exterior 

 margin impunctured ; feet blackish piceous ; tarsi pale rufous. 



Length three-tenths of an inch. 



The thorax is somewhat longer than that of cinctus Grav., 

 and the punctures of the elytra are more numerous. 



OXYTELUS Grav. 



1. 0. SCULPTUS. — Blackish; five lined; elytral rufous; feet 

 pale. 



Inhabits Pennsylvania. 



Body piceous-black, punctured ; head indented, with numer- 

 ous, small punctures above ; mouth piceous ; antennae fuscous, 

 piceous at base ; thorax with five grooves, of which the exterior 

 ones are dilated and not deeply impressed ; densely punctured ; 

 anterior angles not acute ; elytra dull rufous, with small hairy 

 punctures; a subsutural impressed line and another from the 

 1834.] 



