STAPHYLINID/E 417 



below which the latter are finely, more closely and confusedly punc- 

 tate; the inner of the other two series is generally of fine confused 

 punctures, the outer more regular and of stronger punctures. Body 

 slender, elongate-fusiform, deep black and highly polished through- 

 out; head rounded, not quite so wide as the prothorax, the eyes 

 anteriorly separated by only two-fifths more than their own width 

 at that point; antennae short, slender basally, moderately incrassate; 

 prothorax orbicular, truncate at apex, as wide as long; elytra some- 

 what longer than wide and much longer than the prothorax, at base 

 rather wider than the latter and at apex still much wider; abdomen 

 finely, closely, evenly punctate, each segment with a rather indistinct 

 oblique area of coarser paler hairs near each side basally; sixth 

 ventral (cf ) with a large triangular emargination at apex; hind tarsi 

 very slender, the anterior moderately dilated in the male. Length 

 (cf 9 ) 4-5-6.O mm.; width 0.9-1.15 mm. California (Sonoma to 

 Humboldt Co.). Very abundant. Vancouver Horn. The elytra 

 not aeneous as stated of the Vancouver type. [Quedius seriatus 

 Horn] seriatus Horn 



Elytra uniformly and more or less closely punctured throughout 4 



4 Abdomen with a clearly defined rounded eye-like area of more pallid 

 vestiture near each side, at the base of each dorsal segment. Body 

 slender, very elongate-fusiform, polished and deep black, the elytra 

 feebly aenescent, the legs and antennae pale ochreo-testaceous; head 

 rather small, rounded, the eyes at the middle separated by barely 

 twice their width, slightly more in the female; antennae rather short 

 and slender, feebly incrassate, the outer joints nearly as long as wide; 

 prothorax rather large, somewhat wider than long, widest near the 

 base, the base and basal part of the sides strongly rounded, the sides 

 anteriorly converging and nearly straight, much larger than the head, 

 the serial punctures three; elytra equal in length to the prothorax, 

 shorter than wide, at base as wide as the prothorax, at apex evidently 

 wider; punctures fine but strong, very close-set; abdomen gradually 

 strongly tapering from the base, very finely and extremely closely 

 punctured throughout, the hairs laid differently on the eye-like spots; 

 sixth ventral with a moderate, broadly rounded, shallow apical sinus; 

 hind tarsi short, the anterior strongly dilated (cf 1 ), and less dilated 

 though distinctly so (9). Length (cT 9 ) 5.0-6.3 mm.; width i.i- 

 1.15 mm. California (Lake Tahoe) probus n. sp. 



Abdomen with a feebly defined irregular grouping of paler hairs at each 

 side of the median line at the base of each dorsal segment 5 



5 Body narrowly elongate-fusiform, shining, black, the elytra generally 

 feebly picescent; legs and antennae piceous to testaceous; head 

 rounded, but little narrower than the prothorax, the very large 

 prominent eyes more narrowly separated anteriorly, the antennae 

 rather slender, nearly as long as the head and prothorax, moderately 

 incrassate distally; prothorax moderate in size, much rounded at 

 base and basal parts of the sides, the latter moderately converging 

 and straighter anteriorly; elytra somewhat longer than wide, longer 

 and a little wider than the prothorax, the punctures strong and 

 T. L. Casey, Mem. Col. VI, Nov. 1915. 



