Casey — Observations on the Staphylinidae. 415 



moderate ia size and eloagation, sabparallel, the sides feebly arcuate, 

 the angles rounded ; antennae much less developed than in piceus and 

 less thickened, the third joint obconical and less conspicuously shorter 

 than the second; punctures rather small and unusually sparse above 

 and beneath, the polished punctureless post-ocular line well devel- 

 oped; prothorax scarcely two-fifths longer than wide, noticeably 

 narrower than the head, the sides strongly converging and nearly 

 straight throughout, the apical angles obtuse but very distinct and 

 only slightly rounded; punctures somewhat larger than those of the 

 head; elytra but little longer than wide, obviously shorter than the 

 prothorax but distinctly wider, scarcely visibly wider than the head, 

 the punctures strong like those of the prothorax and rather sparse; 

 abdomen about as wide as the elytra, inconspicuously and very 

 sparsely punctulate. Female unknown. Length 4.6-5.1 mm.; width 



0.68 mm. California (San Diego Co.,— Coronado) angagtus n. sp. 



Sixth ventral of the male broadly and feebly angalate at tip, the angle 

 broadly and obtusely rounded; pronotal punctures very fine, sparse and 

 inconspicuous. Body very slender, subparallel, shining, dark rufo- 

 piceous throughout, the head black; legs pale, the antennae dark, 

 rufous; head distinctly elongate, very feebly inflated toward base with 

 the sides somewhat arcuate, the angles very broadly rounded ; punc- 

 tures strong and very close-set laterally, wanting along the middle, 

 the post-ocular polished line distinct; under surface strongly, rather 

 closely punctured, subimpunctate basally; antennae notably thick, 

 much longer than the head in the male, less conspicuously so in the 

 female, the third joint of the former not quite as long as wide, obtra- 

 pezoidal with rounded sides, about as long as wide in the latter sex; 

 prothorax small, much narrower than the head, elongate, the sides 

 feebly converging posteriorly, the apical angles very broadly rounded 

 and almost completely obliterated; elytra small, quadrate, a little 

 shorter but much wider than the prothorax, rather distinctly wider 

 than the head, finely, sparsely and inconspicuously punctate; abdomen 

 toward tip as wide as the elytra, a little narrower toward base, very 

 finely, sparsely punctulate. Female with the apex of the sixth ven- 

 tral produced and very acutely angulate at the middle, the surface at 

 the angle bearing a small dense tuft of recumbent pale hairs. Length 

 4.6-5,2 mm.; width 0.75 mm. California (Siskiyou Co.) ...piceus n. sp. 



In the male of piceus the third joint of the maxillary palpi 

 becomes somewhat shorter and more strongly thickened api- 

 cally than usual, with the fourth joint normal in form but cor- 

 respondingly elongate, being about three-fourths as long as 

 the third; this, coupled with the almost obsolete apical 

 angles of the prothorax, notably short third antennal joint 

 and pointed, rather than spinose, sixth ventral of the female, 

 seems to indicate a subgeneric departure in the direction of 

 HabroUnus, but, at the same time, the female of piceus 



