Casey — Observations on the Staphylinidae. 143 



and prothorax, moderately incrassate, the second and third joints 

 elongate as in the preceding; prothorax nearly .three -fourths wider 

 than longj rather more strongly narrowed anteriorly^ with the sides 

 less arcuate, the punctures fine but more distinct, moderately sparse; 

 elytra larger, more evidently wider than the prothorax, the sides obvi- 

 ously longer than those of the latter, the suture three-fourths as long 

 as the median line, the punctures less fiae, strongly asparate and close- 

 set throughout; abdomen at base as wide as the elytra, but little nar- 

 rowed thence to the tip. the punctures coarser than in postpicta and 

 equally sparse; hind tarsi similar. Length 4.4 mm.; width 1.45 mm. 

 Montana (Kalispell),— H. F. Wickham montanica n. sp. 



15 — Form rather stout, parallel, piceous-black, the sides of the prothorax, 

 entire elytra, abdominal tip and legs rufous; antennae dusky, gradually 

 rufous toward base; head finely, sparsely, ttie pronotura minutely and 

 closely punctate, the former small, scarcely more than two-fifths as 

 wide as the latter, the eyes large as usual; antennae long, extending to 

 the middle of the elytra, gradually, strongly iucrassate to the tip, the 

 second joint more elongate than usual but still much shorter than the 

 third; prothorax unusually large, dilated and strongly rounded at the 

 sides, moderately narrowed at apex, the baseless arcuate than the sides, 

 the basal angles broadly rounded; disk three -fifths wider than long; 

 elytra not at all wider than the prothorax, and, at base, narrower, 

 distinctly shorter than the latter, the suture three-fifths as long, 

 the punctures fine, close- set and asperate; abdomen but little narrowed 

 behind, at base fully as wide as the elytra; punctures moderately coarse, 

 unusually close-set toward base but extremely sparse toward tip; me- 

 tasternal process less abbreviated than usual, triangular; hind tarsi 

 very slender, almost as long as the tibiae, the basal joint very long, 

 equal to the next three combined. Length 3.3-4.0 mm.; width 1,15- 

 1.3 mm. Canada (Grimsby) thoracica Cay. 



Form much less stout, less parallel, polished, the head blackish-piceous, the 

 prothorax paler piceous, the elytra throughout pale flavo-testaceous, 

 the abdomen black, pale at tip; antennae fuscous, the basal parts and 

 legs pale; head nearly half as wide as the prothorax, somewhat longer 

 than wide, very finely, sparsely punctate, the antennae nearly as in 

 thoracica, extending rather beyond the middle of the elytra; prothorax 

 much smaller than in thoracica, strongly narrowed toward apex, rounded 

 laterally toward base, the latter evenly arcuate as usual, the angles sub- 

 obliterated; disk three-fifths wider than long, very finely, evenly but 

 not very closely punctate ; elytra much shorter than the prothorax, the 

 the sides more diverging from the base than in the preceding, strongly 

 closely and asperately punctate, the suture three-fifths as long as the 

 prothorax; abdomen distinctly narrowed from base to apex, coarsely, 

 sparsely punctured throughout, the punctures gradually smaller pos- 

 teriorly; metasternal process nearly as in thoracica but more obtuse at 

 apex ; hind tarsi shorter than the tibiae, the basal joint not quite as long 

 the next three combined. Length 3.2 mm.; width 1.0mm. Rhode 

 Island (Boston Neck) collusor n. sp. 



