Casey — Observations on the Staphylinidae. 413 



than the head, stout, the subapical joints transverse; prothorax 

 narrow, fully one-half longer than wide, very much narrower than the 

 head, the sides rather strongly converging, the angles distinct but 

 rounded, the punctures fine and rather sparse; elytra somewhat 

 elongate, barely as long as the prothorax but much wider, rather wider 

 than the head, finely, evenly, rather sparsely and irregularly punctate; 

 abdomen but little narrower than the elytra, much wider than the 

 prothorax, minutely, sparsely punctulate toward the sides. Female 

 with the sixth ventral medially prolonged into a very slender spine 

 curving upward behind the abdomen, with its tip very fine and not at 

 all expanded. Length 6.4 mm.; width 0.92 mm. California (Sonoma 



to Monterey). [= brunnescens Lee] parens Lee. 



Prothorax pale in color, either partially or wholly 4 



4 — Body smaller and more slender, moderately convex as usual, the head 

 and abdomen deep black, the latter not paler at tip, the elytra rather 

 pale and uniform piceous-brown throughout, the prothorax pale tes- 

 taceous, clouded with a blackish oblique streak from the centre to each 

 apical angle and more narrowly along the median line posteriorly for a 

 short distance; legs pale, the antennae dark, rufous; head moderate 

 in size, parallel, the sides feebly arcuate, the angles broadly rounded; 

 surface behind the antennae but little longer than wide, deeply and 

 perforately, not very coarsely but closely punctate, the median im- 

 punctate line rather wide, the under surface similarly but less closely 

 punctured; post-ocular polished line distinct; antennae only moderately 

 thick ; prothorax scarcely a third longer than wide, much narrower than 

 the head, the sides straight and only feebly converging, the apical^angles 

 distinct and but narrowly rounded ; punctures small but very strong 

 and distinct, more or less sparse and irregular in distribution, some- 

 times unevenly lineate in arrangement, especially toward base ; elytra 

 much elongated obviously longer and much wider than the prothorax, 

 wider than the head, finely but unusually strongly, rather sparsely and 

 unevenly punctured; abdomen but little narrower than the elytra, in- 

 conspicuously and sparsely punctulate. Female unknown. Length, 

 6.5 mm.; width 0.82 mm. California (southern), — H. C. Fall. 



bicolor n. sp. 

 Body much larger and stouter, subparallel, convex, shining, pale testaceous 

 in color throughout, the legs concolorous, the antennae slightly darker, 

 the abdomen sometimes slightly piceous and the head occasionally with an 

 indeflaite blackish vertexal cloud; head well developed, subparallel or 

 feebly dilated basally, with the angles well rounded as usual ; antennae 

 thick; punctures not very coarse but perforate, close-set and conspicu- 

 ous, the median impunctate line decidedly narrow ; under surface strong - 

 ly but rather sparsely punctured, the basal half impunctate; obtuse pol- 

 ished line behind the eyes distinct and normal; prothorax nearly one - 

 half longer than wide, much narrower than the head, the sides distinct- 

 ly converging throughout and nearly straight, with the apical angles 

 obtuse but distinct and slightly rounded; punctures fine but rather 

 strong, unevenly distributed, irregular, sparse basally, denser apically; 

 elytra about as long as wide, much shorter but somewhat distinctly 

 wider than the prothorax, equal in width to the head, finely but strong- 



