STAPHYLINID.E 185 



wider and two-thirds longer than the prothorax, the punctures fine, 

 sparse and feeble, each with a short stiff pale hair; abdomen conical, 

 with feebly arcuate sides, at base evidently narrower than the elytra, 

 finely, feebly punctulate and with rather long stiff hairs, the fifth tergite 

 (cf 1 ) with a feeble, transversely arcuate tumidity evidently before the 

 apical margin, the sixth with a deep transverse emargination in rather 

 more than median third, the sides of the emargination very acute and 

 directed obliquely toward the median line, the bottom with two very 

 small acute spiniform teeth. Length 1.72 mm.; width 0.68 mm. Mani- 

 toba (Aweme), Norman Criddle. 



Allied to laurana and with nearly similar sexual characters, 

 though the two minute teeth at the bottom of the sixth tergitic 

 emargination of the male, are much more widely separated; but 

 it has rather longer, more slender antennae, less strongly obtrape- 

 zoidal prothorax and somewhat more prominent eyes. 



Gyrophaena keeni n. sp. Larger and still stouter, shining though 

 with distinct and rather large micro-reticulation, piceous-black, the 

 prothorax but little paler, the elytra pale, blackish on the flanks and at 

 the hind angles, the abdomen still paler, the fourth tergite and adjacent 

 regions black; head transverse, barely narrower than the prothorax, 

 with the usual scattered punctures, the eyes prominent, the tempora 

 about a third as long; antennae pale, the stouter part feebly infumate 

 as in the preceding but shorter, the joints five to ten distinctly wider 

 than long, the last about as long as the two preceding; prothorax three- 

 fifths wider than long, subparallel, the sides rounding rapidly at apex; 

 surface feebly reflexed along the moderately arcuate base, the punctures 

 widely scattered, not conspicuous, the post-median pair distinct; elytra 

 transverse, much shorter than in the preceding, parallel, fully one-half 

 wider but rather less than one-half longer than the prothorax, the humeri 

 widely exposed but rounded, the punctures shallow, sparse and small; 

 abdomen evidently narrower than the elytra, subparallel, the fifth tergite 

 but little narrower than the base, the punctures fine, rather sparse, each 

 with a stiff hair as on the elytra, the fifth tergite (cf ) with four small 

 tumidities near the apex medially, the two lateral cariniform, the two 

 median rounded, the sixth subtransverse at apex, with a long slender 

 process near each side, projecting obliquely inward, and with two slender 

 median processes, which do not project posteriorly as far as the lateral. 

 Length 2.0 mm.; width 0.72-0.75 mm. British Columbia (Metlakatla), 

 Keen. 



May be placed near tenebrosa Csy., but larger, with broader and 

 more parallel abdomen, and with the two median tumidities of 

 the fifth male tergite rounded and not cariniform; there are also 

 numerous other differences. 



