92 MEMOIRS ON THE COLEOPTERA 



closely allied to brumalis but having the antennae longer, with the 

 joints distally very much less transverse than in the female of that 

 species, in this respect resembling more nearly the female of carlottce, 

 the punctuation denser, the head smaller and less transverse and the 

 eyes distinctly less developed. 



The antennae are notably longer and heavier in the male of 

 brumalis than in the female, though similar in general structure. 



Atheta sumpta n. sp. Stout, rather shining, the punctures close-set 

 and strongly asperate, finer and sparser on the head and abdomen, the 

 latter polished, with the micro-reticulation rather large and irregularly 

 polygonal; pubescence rather short and coarse, palish; color deep black, 

 the elytra fusco-testaceous, becoming black suturally toward base and 

 postero-externally, the legs pale; head large, transverse, three-fourths as 

 wide as the prothorax, the eyes at their own length from the base, the 

 tempora equally prominent, parallel and almost straight nearly to the 

 base, there rapidly rounding, the carinse fine, not entire; antennae (9) 

 short, black, gradually pale and slender basally, rapidly and strongly 

 incrassate distally, the second and third joints equal, fourth not longer 

 than wide, the fifth barely wider than long, the outer joints rapidly larger, 

 becoming strongly transverse, the last longer than the two preceding; 

 front with a strong rounded central impression; prothorax large, three- 

 fifths wider than long, parallel and evenly rounded at the sides, broadly 

 and feebly impressed centrally; elytra shorter than usual, transverse, 

 with diverging and nearly straight sides, at base just visibly wider, at 

 apex distinctly wider, the suture nearly one-half longer, than the pro- 

 thorax; abdomen parallel, with feebly arcuate sides and rather strong 

 margins, evidently narrower than the elytra. Length 2.35 mm.; width 

 0.75 mm. British Columbia (Metlakatla), Keen. 



The female type was received from Mr. Keen only a few weeks 

 ago; it differs from the female of brumalis in its slightly shorter and 

 more rapidly incrassate antennae, with the fourth joint shorter, 

 in its much larger head and prothorax, shorter elytra and stronger 

 asperate punctures of the pronotum and elytra. 



The following eleven species are more or less small and pallid 

 fungus-loving forms, allied to comitata, elota and gnoma, and the 

 first three are distinguished by a peculiar form of the head, with 

 relatively more anterior eyes: 



Atheta kansana n. sp. Moderately slender and convex, highly polished, 

 the micro-reticulation obsolete, barely traceable and polygonal toward 

 the abdominal apex, the punctures minute, sparse, not at all asperate, 

 the vestiture rather long but sparse; color pale testaceous, the head and 

 abdomen, except at tip, blackish, the legs very pale; head as long as 

 wide, four-fifths as wide as the prothorax, the eyes prominent, at a little 



