STAPHYLINID/E. 135 



Differs from the preceding in its more shining surface, more 

 uniformly black color, rather more slender form and in the form of 

 the prothorax. 



Arisota pomonensis n. sp. General coloration and sculpture as in the pre- 

 ceding but stouter in form and with a relatively smaller head, deep black, 

 the elytra piceous-black; head and pronotum polished, without evident 

 reticulation, the latter very feeble elsewhere, the asperate punctures rather 

 close as usual; head subquadrate, the eyes at their own length from the 

 base, the tempora parallel, then broadly rounded to the base, the antenna 

 as in the preceding but with the second joint a little shorter than the first 

 and distinctly longer than the third; prothorax transverse, subparallel and 

 rounded at the sides, very much wider than the head and but very little 

 narrower than the elytral base, scarcely at all impressed; elytra only moder- 

 ately transverse, flat, the dense asperities very strong, the suture nearly a 

 third longer than the prothorax; abdomen short, but little narrower than 

 the elytra and almost perfectly parallel, with feebly arcuate sides, Length 

 (contracted) 1.4^ mm.; width 0.4 mm. California (Pomona, Los Angeles 

 Co.), Fall. 



Stouter than the preceding but with similarly shining anterior 

 parts, the prothorax, however, more transverse, more parallel and 

 with more rounded sides. 



Arisota speculifer n. sp. Almost similar to the preceding but with larger 

 eyes and less parallel prothorax, deep black, the elytra slightly piceous; 

 head and pronotum polished but with the usual rather close and asperate 

 punctures, which are still denser on the elytra; abdomen with the usual 

 asperate sculpture, the usual long bristling setae, in addition to the smaller 

 and more decumbent hairs, distinct; head nearly as long as wide, broadly 

 rounded at the sides, the eyes at less than their own length from the base; 

 antennae as usual, the third joint unusually small, much shorter than the 

 second and not quite twice as long as wide; prothorax transverse, the sides 

 evidently converging from base to apex but rather strongly rounded, a little 

 narrower than the elytral base and much wider than the head, very minutely, 

 feebly impressed at the middle of the basal edge; elytra well developed, 

 parallel, rather transverse, the suture two-fifths longer than the prothorax; 

 abdomen not as wide as the elytra, subparallel. Length 1.75 mm.; width 

 0.4 mm. California (Monterey to Humboldt Co.). 



This species is more nearly of the insueta type but is stouter, the 

 sides of the prothorax much more arcuate and not quite so converg- 

 ing and the antennae a little longer and stouter. 



Arisota apacheella n. sp. More slender than usual, moderately convex, 

 the asperate punctures as usual, the anterior parts shining, the reticulation 

 feeble, and, on the pronotum, almost completely obsolete; color black, the 

 elytra dark piceous-black; head very slightly wider than long, rounded at 

 the sides, the eyes at a little less than their own length from the base; an- 



