STAPHYLINID.E. 103 



narrower than the elytra, parallel, the fifth segment trapezoidal and about 

 as long as the preceding, its asperate punctures rather close; hind tarsi 

 somewhat shorter than usual, the basal joint not quite as long as the second. 

 Length 1.6-2.0 mm.; width 0.35-0.5 mm. California (Gilroy Hot Springs, 

 Sta. Clara Co.). 



In the male the sixth tergite has, at each side of the rather 

 narrow and simple transverse tip, a somewhat long and slender 

 spicule. The mesosternal process extends slightly behind the mid- 

 dle of the moderately separated coxae, with its apex angulate but 

 not finely so and separated by a decidedly short interval from the 

 large and angulate metasternal projection. 



Dimetrota retrusa n. sp. Allied to the preceding and with nearly similar 

 sternal structure, though the mesosternal point is still more blunt, but with 

 relatively smaller head and pro thorax, almost similar throughout in coloration 

 and in the dense asperulate punctulation, the elytra even less pale, blackish; 

 head rather small, the eyes large and convex, at about half their own length 

 from the base, the tempora less prominent, the antennae similar though a 

 little longer and slightly less thickened distally ; prothorax narrower and more 

 parallel, the apex and base of about equal width, the sides evenly and moder- 

 ately arcuate, the median line finely impressed in more than basal half, 

 much narrower than the elytra and correspondingly much wider than the 

 head; elytra shorter and more transverse but with the suture about a third 

 longer than the prothorax; abdomen as in sectator but still narrower. Length 

 1.7-2.2 mm.; width 045-0.58 mm. British Columbia (Metlakatla, 455), 

 Keen. 



The sexual characters are as in sectator, the spicule at each side 

 of the truncate apex of the sixth male tergite being even longer and 

 moie slender. 



Dimetrota vigilans n. sp. Rather convex, not parallel, piceous-black, 

 the elytra pale but clouded with blackish basally and along the suture and 

 also externally toward each apical angle, the legs rather pale piceous; lustre 

 alutaceous, the reticulation and fine dense asperulate punctures well developed, 

 the abdomen finely strigilate in wavy transverse lines, the fine punctures 

 close-set but sparse apically; head rather small, the eyes large, convex, at 

 a little less than their own length from the base, the tempora rounding to 

 the base and less prominent, the carinae subentire; antennae blackish, slender, 

 moderate in length, only very feebly incrassate, the third joint longest, a 

 little longer than the first and obviously longer than the second; prothorax 

 moderately transverse, parallel, rounding and converging at the sides an- 

 teriorly, much wider than the head and distinctly narrower than the elytra, 

 the median line finely impressed throughout, more feebly anteriorly; elytra 

 short and subparallel, though fully a fourth longer than the prothorax, the 

 apices broadly and very feebly sinuate externally; abdomen narrower than 

 the elytra, parallel basally, narrowing apically, the sixth tergite (c?) truncate 



