Casey — Observations on the Staphylinidae. 337 



second and third joints subequal, outer joints almost as long as wide, 

 obtrapezoidal, tbe eleventh pointed, as long as the two preceding 

 combined; prothorax two-fifths wider than the head and a third wider 

 than long, parallel, the sides evenly and distinctly arcuate, the base 

 rounded; angles obtuse, the surface even, except a short, extremely 

 fine and feeble impression along the median line very near the base; 

 elytra only very slightly wider than the prothorax, nearly a third 

 longer, subparallel; abdomen parallel, subequal in width to the elytra. 

 Length 2.8 mm.; width 0.8 mm. Vancouver Island (Victoria), — H. 

 F. Wickham atriventris n. sp. 



This species differs from wickJiami in its smaller size, and, 

 from both that and insignis, in its relatively more incrassate 

 antennae distally ; the elytra resemble those of insignis and 

 are relatively less transverse than in loickhami. 



Terasota n. gen. 



The unique type of this genus differs conspicuously in gen- 

 eral appearance from Macroterma and Aihetota in its more 

 slender form and small prothorax; it may be described as 

 follows : — 



Moderately stout and convex, alutaceous, .distinctly micro-reticulate, more 

 obsoletely and coarsely on the abJomen, which is more shining; punc- 

 tures very flue, indistinct, not very dense, more distinct on the abdomen 

 though sparser aplcally; pubescence fine, short, inconspicuoas; 

 color blackish-piceous, the elytra scarcely at all paler, the abdomen 

 slightly rufescent except toward tip; legs pale brown, the antennae 

 blackish, the first joint piceous; head slightly elongate, the sides arcu- 

 atelyand feebly converging behind the notably large and rather promi- 

 nent eyes, the neck three-fourths as wide; antennae extending nearly to 

 the middle of the elytra, slender, gradually and moderately incrassate 

 distally, the. elongate second and third joints equal, the fourth and fifth 

 elongate, fifth to tenth as long as wide to slightly transverse, the elev- 

 enth scarcely as long as the two preceding combined, pointed; prothorax 

 only just visibly wider than the head, a fifth wider than long, widest 

 anteriorly, where the sides are broadly rounded, thence feebly converging 

 and straighter to the base, the angles obtuse but not distinctly rounded; 

 surface feebly impressed along the median line from before the middle 

 nearly to the base; elytra large, one- half wider and longer than the 

 prothorax, the sides feebly diverging from the humeri, which are well 

 exposed at base; abdomen but little narrower than the elytra, parallel, 

 with rather arcuate sides, the three basal impressions strong, some- 

 what broad and equal. Length 3.25 mm.; width 0.78 mm. New York 

 (Ithaca) , — H. H. Smith brnuneipes n. sp. 



No characters indicating sex are observable ; the sixth ter- 

 gite is narrowly subtruncate at tip in the type. 



