38 MEMOIRS ox THE COLEOPTERA. 



not quite entire; antennae rather short, strongly incrassate, the outer 

 joints strongly transverse, the second and third equal, cylindric and obconic 

 respectively; prothorax well developed, transverse, parallel and rounded 

 at the sides, very much wider than the head and almost as wide as 

 the elytra, the latter transverse, the suture only a little longer than the 

 prothorax; abdomen parallel, narrowing a little behind, almost as wide as 

 the elytra, the second and third segments equal in length, the sixth 

 tergite (c") evenly and moderately sinuate at tip, the sixth ventral 

 plate narrow, strongly rounded in the male, both plates broader and broadly 

 rounded in the female; mesosternal process extending nearly to apical fifth 

 of the coxae, becoming parallel and moderately narrow apically, the tip 

 rounded and not far distant from the broad angulate metasternum; basal 

 joint of the hind tarsi much shorter than the second. Length 2.3 mm.; 

 width 0.55-0.58 mm. British Columbia (Metlakatla), Keen. 



The female has the elytra slightly shorter and still more trans- 

 verse, with the apical plates of the abdomen very much wider; 

 it is probably a fungivorous species. 



Atheta neutralis n. sp. Rather stout, moderately convex, black, the elytra 

 and legs castaneous, the femora picescent, the antennae blackish throughout; 

 surface dullish, finely, closely, asperulately punctate, the abdomen shining, 

 sparsely punctulate and with rather long hairs, the vestiture otherwise short 

 as usual; head rather small, moderately transverse, parallel, the eyes at 

 about their own length from the base, the carinae distinct, almost entire; 

 antennae moderately long, gradually and rather feebly incrassate, the outer 

 joints distinctly transverse, the last longer than the two preceding, the second 

 and third long, obconic, the latter slightly the longer; prothorax transverse, 

 parallel but only moderately rounded at the sides, much wider than the head 

 and slightly though evidently narrower than the elytra, scarcely at all im- 

 pressed; elytra only slightly transverse, much longer than the prothorax; 

 abdomen distinctly narrower than the elytra, parallel, slightly narrowing 

 apically, the fifth tergite slightly shorter than the fourth, the sixth (cf) evenly 

 and moderately sinuate at tip; basal joint of the hind tarsi much shorter 

 than the second; mesosternum gradually narrowed to the acutely angulate 

 but neither aciculate nor prolonged apex, which is at apical fourth of the 

 coxae and very close to the long angulate metasternal projection, the angle 

 blunt. Length 2.3 mm.; width 0.6 mm. California (Sta. Cruz Mts.). 



It is assumed that the three specimens in my collection are males, 

 though the abdominal characters are feeble, as in mollicula. 



Atheta fanatica n. sp. Moderately stout and subfusoid, feebly shining, 

 the abdomen strongly, the punctures very small, moderately close-set and 

 slightly asperulate; vestiture short, not very dense; black, the elytra piceo- 

 rufous, the legs piceous; head well developed, slightly transverse, parallel, 

 the eyes at their own length from the base, the carinae wholly obsolete, not 

 traceable even basally; antennae blackish throughout, moderate, gradually 

 and not strongly incrassate, the outer joints evidently transverse, the last 

 short, scarcely so long as the two preceding, second and third elongate, sub- 



