ioo MEMOIRS ON THE COLEOPTERA. 



sides, the base rounded, with very obtuse blunt angles, the small rounded 

 ante-scutellar impression very feeble; elytra only moderately short, with 

 feebly diverging and nearly straight sides, at base barely visibly wider, 

 the suture scarcely a fourth longer, than the prothorax; abdomen evidently 

 narrower than the elytra, parallel basally, gradually, very feebly and 

 arcuately narrowing behind about the middle, the margins somewhat 

 strong and deep, the fourth and fifth tergites equal in length, the sixth ( 9 ) 

 arcuato-truncate at apex; basal joint of the hind tarsi very slightly shorter 

 than two to four, which are mutually equal, slender; apex of the meso- 

 sternal process bearing two diverging yellow seta? and distant from 

 the angulate metasternum by fully one-half the width of the middle 

 femur, the coxae not very approximate. Length 2.4 mm.; width 0.68 

 mm. Ohio (Cincinnati), Dury. 



Readily identifiable by the coloration and distinguishable from 

 the preceding by the differently colored elytra and smaller, much 

 less transverse fourth antennal joint. 



Atheta burra n. sp. Rather stout, subparallel and convex, very shining, 

 the micro-reticulation feeble, in very fine feeble and close transverse 

 wavy strigilation on the abdomen; punctures fine, somewhat close but 

 not conspicuous, rather sparse on the abdomen, the vestiture somewhat 

 coarse and pale; color dark rufo-piceous, the head and the abdomen 

 behind the second tergite, except at apex, black; elytra pale tawny- 

 yellow, clouded with blackish toward the external apical angles and 

 suturally toward base, the legs very pale; head slightly wider than long, 

 fully three-fourth as wide as the prothorax, the eyes large, at fully one- 

 half their length from the base, the tempora equally prominent, straight 

 and parallel for a short distance, then very oblique to the base, the carinae 

 very fine, far from entire; antennae moderately long, rapidly incrassate 

 and blackish distally, slender and pale through the unusually long basal 

 part, the long second and third joints equal, fourth but slightly wider 

 than long, tenth strongly transverse, the last gradually and acutely 

 pointed, rather longer than the two preceding; prothorax fully one-half 

 wider than long, parallel and somewhat strongly, subevenly rounded 

 at the sides, with a small but distinct rounded ante-scutellar impression; 

 elytra only slightly transverse, with diverging and nearly straight sides, 

 at base only very slightly wider, the suture fully a third longer, than the 

 prothorax; abdomen but little narrower than the elytra, parallel, with 

 feebly and evenly arcuate sides, the fourth and fifth tergites equal, the 

 sixth (9 ) arcuato-truncate and broad at apex; tarsi as in the preceding. 

 Length 2.2 mm.; width 0.68 mm. Wisconsin (Bayfield), Wickham. 



Resembles the preceding very much in form, size and coloration 

 but differs in the larger though less prominent eyes, in the more 

 apically and rapidly incrassate antennae, rather shorter and more 

 transverse prothorax and longer elytra; also in the finer, closer 

 and more distinct transverse wavy strigilation of the abdomen, 



