422 ENTOMOLOGICAL NEWS [Dec., '09 



Mesosternum pointed behind, entering about three-fourths be- 

 tween the middle coxae, the latter a little separated. 



Metasternum pointed in front, meeting the mesosternal point. 



In the male the 8 dorsal segment of the abdomen truncate, with 4 

 equidistant teeth, the two middle ones a little broader and blunter at 

 apex than the side teeth, the latter pointing slightly inwards ; 6 ventral 

 segment rounded, narrowed toward apex, moderately produced. 



In the female the 8 dorsal segment rounded, a little narrowed to- 

 ward apex, slightly truncate and slightly emarginate in the middle; 6 

 ventral segment rounded, narrowed, scarcely produced. 



Length, 2.4-2.6 mm. 



6. Atheta (Dimetrota) neoiuexicana spec. nov. 



Moderately elongate depressed and robust, very little narrowed in 

 front and behind. 



Head and prothorax black, with faint bronze lustre, moderately shin- 

 ing; elytra piceous brown, very little shining; abdomen black, more 

 shining; antennae piceous, their first joints and the mouth a little light- 

 er ; legs brownish yellow. 



Antennae a little longer than head and prothorax together, moder- 

 ately incrassate toward apex, finely pubescent and moderately setulose ; 

 joint I longer, thickened; 2 scarcely longer than 3; 4 longer than 

 wide; 5-10 gradually incrassate, the penultimate joints about twice as 

 wide as long; n almost longer than 9 and 10 together, oval, pointed. 



Head a little narrower than the prothorax, a little transverse, 

 rounded, moderately densely, subgranulosely punctate, very finely 

 pubescent; eyes large, longer than the tempora; genae entirely mar- 

 gined. 



Prothorax narrower than the elytra, about one-half wider than 

 long, sides evenly rounded, very little convergent in front ; base round- 

 ed, at the sides emarginate ; hind angles rounded ; moderately densely, 

 subgranulosely punctate ; sparsely pubescent, with 2-3 side bristles. 



Elytra wider and about one-third longer than the prothorax ; dense- 

 ly subgranulosely punctate, finely pubescent. 



Abdomen very little narrowed behind ; segments 3-5 transversely 

 impressed at base ; very finely and sparsely punctate, segments 6 and 7 

 almost smooth ; with black side bristles. 



Mesosternum pointed behind, entering about two-thirds between the 

 middle coxae, the latter a little separated. 



Metasternal process meeting the mesosternal process. 

 In the male the 8 dorsal segment of the abdomen with four teeth, 

 the two middle ones a little nearer to the side teeth than to each other, 

 rather blunt, separated by a shallow sinus; the two side teeth a little 

 longer, pointed, pointing inwards, separated from the middle teeth by 

 a little deeper sinus ; 6 ventral segment rounded, narrowed toward 

 x, a little produced. 



