H. C. FALL. 14!) 



Last ventral (%) with a rather shallow transverse apical impression which 

 is roughened ; ( 9 ) with a deep transverse apical polished fovea. 



serricollis. 

 Color rufotestaceous. 



Last ventral ( % ) with a deep subtransverse fovea reaching from the apex 

 nearly to the hase of the segment ; ( 9 ) with a still larger, more pro- 

 found fovea poculiiera. 



Last ventral ( £, ) with a well-defined transverse apical impression ; ( 9 ) with 

 a feehle median impression ; prothorax distinctly narrower than the 



elytra at the humeri, tempora long prionodera. 



Last ventral ( % ) with a small hut well-defined transverse fovea, which occu- 

 pies fully two-thirds the length of the segment ; prothorax suhequal 

 in width to that of the elvtra at the humeri ; tempora short. 



Carolina. 



8. Prothorax densely cribrate-punctate, last ventral of % rather feebly impressed 



at the middle of the apical margin cribricollis. 



9. Prothorax large, strongly rounded at sides, widest at middle and scarcely at 



all narrower than the elytra at hase ailiplicollis. 



Prothorax widest at a greater or less distance before the middle, never as wide 

 as the elytra at base, 10. 



10. Size smaller, always less than 2 mm 11. 



Size larger (2-2.5 mm.), except some dentigera or very small specimens of 



serrata, sculpture of both upper and under surface coarser and closer 

 (except occidua ). 

 Tempora very short, scarcely as long as the eighth antenna! joint. 



serrata. 

 Tempora decidedly longer, usually evidently longer than the eighth an- 

 tennal joint. 

 Prothorax three- fourths as wide as the elytra. 

 Punctuation coarser and denser throughout. 



Size larger, elytra uniformly brown or piceous brown. . . .incerta. 

 Size smaller, rufocastaneous, elytra black in apical half. . apical is. 



Punctuation comparatively fine and sparse occidua. 



Prothorax but little more than half the greatest width of the elytra, 

 color piceous black dentisera, 



11. Femora very slender, head but little narrower than the prothorax. sides of 



the latter strongly denticulate tenuipes. 



Femora as usual, head much narrower than the prothorax, the sides of the 

 latter more finely serrulate- • • - 12. 



12. Eyes very small, distant on the front by fully four times their longest diame- 



ter as seen from the front ; tempora nearly as long as the eye. 



temporalis. 



Eyes normally large, distant on the front by but little more than twice their 



own diameter : tempora much shorter 13. 



13. Fifth ventral segment not longer than the fourth, the sixth usually distinctly 



visible, especially in the %, ; last three joints of antennal funicle trans- 

 verse brevicornis. 



Fifth ventral at least one-half longer than the fourth, the sixth not visible, 

 or only accidentally so; outer joints of funicle not evidently trans- 

 verse, or with at most the eighth joint slightly transverse. 



TRANS. AM. ENT. SOC. XXVI. NOVEMBER, 1899. 



