290 COLEOPTERA OF NORTH AMERICA. 



slender nearly filiform, and slightly compressed, commences on 

 the 3d joint, on the under surface, and gradually increases, cover- 

 ing the whole of the joints beyoud the 6th, and appears like a 

 fine dense punctuation. The head is small, the eyes large, 

 coarsely granulated. The legs are slender, finely punctured, and 

 hairy. The side pieces of the metathorax are triangular, broad 

 in front, pointed behind. The abdomen is gradually narrowed 

 behind, with the 5th ventral segment truncate ; the intercoxal 

 process is acute. 



Tribe VI.— POEC1LOSOMINT. 



This tribe contains all Prionidae with finely granulated eyes, 

 and is represented in our fauna by single species of two genera, 

 belonging to the group Solenopterae. In the specimens before 

 me, which are females, the poriferous system of the antennae 

 consists of a few irregular scar-like depressions on the outer 

 joints. 



The head is small, much narrower than the prothorax, which 

 is trapezoidal, smooth, and obtusely toothed near the base ; very 

 roughly punctured and acutely toothed behind the middle in 

 Elateropsis. In both genera the prosternum is deeply emarginate 

 behind for the reception of the mesosternuin, which is also emar- 

 ginate behind. 



Sphenostethus Taslei (serripennis Hald.), occurs in the Middle 

 Atlantic States. Elateropsis fuliginosus occurs only in the 

 southern point of Florida, whither it has extended from Cuba. 



Sub-Family I.— CERAMBYCID^E (genuini). 



The only characters I can give to define this sub-family are 

 those already set forth in my first paper on this series of Cole- 

 optera,* viz. : Prothorax not margined, front tibiae not obliquely 

 sulcate, labrum separate from the front, palpi never acute at tip ; 

 to which may be added, antennae always pubescent, never glabrous 

 with corrugated and extensive sensitive surfaces as in Prionidae. 



Utilizing the improvements suggested by Thomson, f myself.J 



* An attempt to classify the Longicom Coleoptera of the part of America 

 north of Mexico. Journ. Acad. Nat. Sci. Phila., 2d i, 311. 



f Famille des Cerambycides, par M. James Thomson, Paris, 1860. 



\ Note on Classification of Cerambycidae, Proc. Acad. Nat. Sci. Phila., 

 1862. 



