4i o MEMOIRS ON THE COLEOPTERA 



to the apex, the base strongly arcuate, the angles very broadly 

 rounded, having only a single fine discal puncture of the usual 

 tripunctate series and otherwise, on the disk, having only a large 

 fovea near apical third at some distance from the edge; elytra nearly 

 as long as wide, distinctly longer than the prothorax and at base 

 narrower, at apex subequal, to the latter in width; punctures fine and 

 widely separated but asperate and distinct; abdomen minutely and 

 scarcely less loosely punctate throughout, the anterior tarsi of the 

 female feebly dilated basally, the posterior missing in the type. 

 Length (9) 7.2 mm.; width 1.65 mm. Manitoba (Aweme), Nor- 

 man Criddle criddlei n. sp. 



Head with the usual coarse puncture adjoining the eyes anteriorly. . . .7 



7 Posterior sublateral discal fovea of the head at a distance from the 

 eye fully equal to the entire length of the latter. Body rather 

 slender, shining, pale testaceous in color, the elytra generally more 

 flavate, the head black; pronotum piceous-black, the legs and an- 

 tennae testaceous; head subquadrate, the sides behind the eyes 

 distinctly longer than the latter, straight and parallel nearly to the 

 rather deep constriction, then rounding obliquely to the latter; 

 antennae rather stout and moderately incrassate, the outer joints 

 shorter than wide; prothorax fully a fourth wider than long, the sides 

 strongly rounded posteriorly, very convergent and straighter an- 

 teriorly, the base strongly rounded; tripunctate series distinct; 

 scutellum black; elytra about as long as wide, distinctly longer than 

 the prothorax and at base a little narrower, the punctures rather 

 strong, widely separated, not acutely asperulate; abdomen parallel, 

 tapering only apically, the punctures fine, asperulate, about half as 

 widely separated as those of the elytra; sixth ventral (cf ) with a 

 small and moderately deep sinus. Length (cf 9 ) 7.5-8.7 mm.; 

 width 1.5-1.75 mm. Queen Charlotte Islands, California (Sta. 

 Cruz Co.) and New York (Ithaca). [Quedius erythrogaster Mann.] 



erythrogaster Mann. 



Posterior sublateral discal fovea of the head not so large and distant from 

 the eye by one-half the length of the latter 8 



8 Body moderately stout, shining, deep black throughout, the elytra 

 sometimes piceous-black, the legs and antennae blackish-piceous; 

 head broadly oval, as long as wide omitting the labrum and man- 

 dibles as usual, the tempera converging and arcuate behind the 

 eyes and distinctly longer than the latter, not more abruptly con- 

 verging near the constriction; antennae moderately slender, shorter 

 and much thicker in the female; prothorax only a fifth or sixth wider 

 than long, almost evenly and strongly rounded at the sides and base, 

 the tripunctate series distinct; elytra large, as long as wide, longer 

 than the prothorax and, at apex, somewhat wider, at base just 

 visibly narrower, than the latter; punctures small and widely sep- 

 arated, not asperate but distinct, those of the abdomen only a little 

 smaller or less separated ; sixth ventral (c? 1 ) with a small and extremely 

 shallow sinus at apex, the adjoining surface with a small oval im- 

 pression; hind tarsi thick, about as long as the tibiae, the fifth joint 

 longer than the first. Length (cf 9 ) 8.0-9.5 mm.; width 1.8-2.0 



