STAPHYLINID^E. 101 



are rather less separated than in resima, and the coloration of the 

 body, legs and antennae strikingly different. 



Dimetrota omissa n. sp. Moderately slender, only slightly convex, 

 shining, finely, asperulately punctate, sparsely except on the elytra, where 

 the punctures are very dense but minute and the micro-reticulation evident, 

 the latter obsolete on the pronotum, distinct and irregular on the abdomen; 

 color black throughout, the elytra feebly picescent, the legs piceous, the 

 tarsi pale; head slightly wider than long, the eyes moderately convex, at 

 fully their own length from the base, the tempora not quite so prominent, 

 the carinse very fine and only present at base; antennae blackish throughout, 

 moderately short, gradually and evidently incrassate, the basal joint longer 

 and a little stouter than the second, the latter a little longer than the third, 

 both slender and gradually narrowed basally, the fourth slightly, the tenth 

 distinctly transverse, the last pointed, scarcely so long as the two preceding; 

 prothorax moderately transverse, evidently wider than the head and a little 

 narrower than the elytra, slightly narrowed at apex, the impression obsoles- 

 cent; elytra large, only slightly shorter than wide, the straight sides feebly 

 diverging, the suture fully one-half longer than the prothorax, the apices 

 not evidently sinuate laterally; abdomen narrower than the elytra, parallel, 

 slightly narrowed through the fifth tergite only, this much longer than the 

 fourth, the sixth broadly rounded and becoming feebly sinuate medially 

 at tip in the type. Length 2.3 mm.; width 0.63 mm. Queen Charlotte 

 Islands. 



Decidedly aberrant in sternal structure and in its subobsolete 

 cephalic carinse; the coxae are rather narrowly separated, the meso- 

 sternum gradually finely aciculate, extending nearly to their apical 

 fourth and briefly separated from the rather long and acutely angu- 

 late metasternum. 



Dimetrota vicaria n. sp. Moderately stout and convex, less shining, the 

 surface throughout distinctly micro-reticulate, minutely and rather closely, 

 subasperulately punctate, the abdomen less finely but more feebly reticulate, 

 minutely, not densely punctulate and shining; coloration as in omissa, the 

 elytra and legs a trifle paler; head flattened medially, the median line im- 

 pressed basally, the form and the carina? nearly as in the preceding though 

 a little smaller in size; antennae rather shorter and stouter, moderately in- 

 crassate, the basal joint much longer and thicker than the second, the latter 

 much longer than the third, which is very different in form, being strongly 

 obconic, the outer joints moderately transverse, the last pointed, not quite 

 so long as the two preceding; prothorax moderately transverse, much wider 

 than the head and a little narrower than the elytra, nearly parallel, the sides 

 broadly arcuate, not evidently impressed; elytra as in omissa but a little 

 shorter, very much longer than the prothorax, transverse at the apices ex- 

 ternally; abdomen nearly similar, the first segment more narrowed basally, 

 the sixth tergite (cf ) broadly trapezoidal and a little more strongly reticulate 

 and asperulate than the others, its apex truncate, gradually and feebly 



