OF PHILADELPHIA. Ill 



near ; elytra not distinctly striated, but irregularly punctured : 

 feet pale rufous. 



Length rather more than three-twentieths of an inch. 

 A small insect, remarkable for the very profound sinuses over 

 the insertion of the antennae. It varies in having the elytra 

 striated, and dull rufous at the base; the third joint of the an- 

 tenna? also is not so long as the two following ones together. 

 [Belongs to Microrhagus. — Lec] 



9. E. MANCUS. — Clypeus truncated ; body punctured ; thorax 

 with an impressed line behind the middle ; posterior angles 

 slightly excurved. 



Inhabits Missouri. 



Body black, punctured, with short hair : head with large, pro- 

 found dense punctures : clypeus elevated, emarginatc each side 

 near the antennae, and truncated before : antennae and palpi 

 rufous : thonix with an imprcs.sed line behind the middle ; punc- 

 tures numerous, profound, equal to those of the head, but not 

 so dense ; posterior angles prominent, very slightly excurved, 

 carinate above; posterior edge slightly bidentate near the mid- 

 dle ; an elevated, abbreviated line on the posterior margin near 

 the lateral carina : scutel entire at base : elytra punctures of the 

 stria; oblong and approximate; interstitial lines with minuu*. 

 punctures furnishing hairs : feet rufous. [172] 



Length seven-twentieths of an inch. 



Var. a. Reddish-brown ; thorax with a paler anterior margin. 



An obscurely characterized species, equal in size to convixa 

 and mrndlca, but diftering from them, besides other characters, 

 in having the lateral elevated line on the posterior margin, and 

 from the former by the conspicuously punctured and less convex 

 thorax. 



[A species of Ayriotcs, afterwards described as A. truncutuf 

 and .1. sfridfiihts 3Iels. — Lec] 



10. E. BASiLARis. — Deep black; clypeus emarginatc; first 

 and second joints of the antennae and feet pale. 



Inhabits Missouri. 



Body deep black, hairy, cylindrical, polished, punctured : head 

 subinequal : clypeus broad and subemarginate at tip : antenn». 

 first and second joints pale rufous; thorax convex, with minute 

 1823.] 



