IO4 MEMOIRS ON THE COLEOPTERA. 



(cf) truncate transversely at tip between the rather large, rounded and 

 moderately inclined, feebly concave auriculae at the lateral angles, these 

 only very feebly prominent posteriorly; metasternal projection almost 

 equilatero-triangular, the angle sharply denned. Length 2.4-2.7 mm.; 

 width 0.58-0.63 mm. Connecticut (Double Beach), H. L. Viereck. 

 Found in fungus. 



This distinct species belongs to the ducens-auguralis group and 

 has similar male sexual characters; the head is relatively even 

 smaller than in the former, the prothorax much larger, and it 

 differs from the latter in its smaller head and very much in the 

 form of the metasternal projection. 



Atheta auguralis n. sp. Moderately stout and convex, feebly shining, 

 the abdomen polished, with numerous fine punctures, sparse behind 

 the third tergite and with the micro-reticulation feeble and subtransverse 

 but not strigilate; punctures elsewhere small, strongly asperulate and 

 close-set, the lustre feebly shining; pubescence very short, palish; color 

 black, the elytra pale tawny-flavate, scarcely visibly and faintly suffused 

 with darker postero-externally and at the scutellum, the first three tergites 

 paler at their apical margins, the legs pale; head moderately small, 

 slightly transverse, two-thirds as wide as the prothorax, the eyes well 

 developed, at two-thirds their length from the base, the tempora not 

 quite so prominent, straight and parallel, rounding basally, the carinae 

 very fine, subentire; antennae moderately long, blackish, pale basally, 

 gradually and moderately incrassate, the second and third joints equal, 

 each shorter and much less stout than the first, fourth very little longer 

 than wide, fifth to tenth distinctly wider than long, the last as long as 

 the two preceding; prothorax well developed, fully one-half wider than 

 long, parallel, with very moderately rounded sides, a little more rounding 

 and converging apically, the base rounded, with the usual obtuse angles, 

 the surface with a shallow and transversely oval ante-scutellar impression; 

 elytra nearly parallel, moderately transverse, very slightly wider, the 

 suture a third longer, than the prothorax; abdomen distinctly narrower 

 than the elytra, parallel, narrowing very slightly apically, the margins 

 rather thin, the fifth tergite slightly longer than the fourth, the sixth 

 (c?) with a large horizontal, feebly concave, evenly rounded auricle at 

 each side of the apex, the space between them gently sinuato-truncate 

 and even. Length 3.0 mm.; width 0.7 mm. New York (Catskill Mts.). 



Recalls ducens in its rather small head; but neither the head 

 nor prothorax are relatively so small as in that species, and it 

 differs furthermore from ducens and the other preceding related 

 forms in the unusually short, broad, obtusely parabolic metasternal 

 projection. 



Atheta bifaria n. sp. Coloration, sculpture and lustre nearly as in the 

 preceding, the punctures less close-set, the black abdomen faintly paler 



