128 MEMOIRS ON THE COLEOPTERA 



from the sides than in the preceding; median stria fine, subentire; 

 lateral margins very fine; elytra evenly oval and convex, short, 

 not one-half longer than wide, fully a third wider than the prothorax, 

 the striae fine, feebly impressed, impunctate, the intervals nearly 

 flat; scutellar stria forming an evenly continuous part of the first 

 stria, the basal part of the latter being widely detached and perfectly 

 similar in the two female examples at hand; legs short, the tarsi 

 rather long, very slender. Length (9 ) 6.7-7.1 mm.; width 2.3-2.6 

 mm. California (Humboldt Co. Hoopa Valley of the Trinity 

 River) humilis n. sp. 



4 Subparallel, rather stout, strongly convex, shining throughout and 

 deep black, the legs pale castaneo-rufous; head small, the impressions 

 deep, straight and very strongly diverging; eyes convex and well 

 developed, the antennae moderate, testaceous throughout; prothorax 

 relatively large, as wide as long, the sides parallel, just visibly ar- 

 cuate, rounding apically and moderately converging in about basal 

 third, becoming broadly and just visibly sinuate toward the angles, 

 which are very obtuse, due to the adjacent arcuation of the base, 

 but minutely and sharply subprominent at apex; base broadly, 

 feebly sinuate medially, arcuate laterally, the marginal line entire 

 but very fine ; apex as in humilis but with more rounded angles ; surface 

 convex, moderately finely margined at the sides, the impression 

 short, a fifth the total length, attaining the base but extremely 

 feebly and subindefinitely impressed; median stria strong, subentire; 

 elytra short, oblong-oval, convex, scarcely one-half longer than wide, 

 about a sixth wider than the prothorax and much less than twice 

 as long, the apex subevenly rounded; sides broadly and moderately 

 arcuate, the humeral denticle minute though evident; striae smooth 

 and impunctate, strong and deep, the intervals rather strongly 

 convex from suture to sides, not different on the flanks, the line of 

 foveae uninterrupted ; scutellar stria extremely short and very oblique; 

 prosternal process obtuse and finely, strongly margined at tip; 

 tarsi moderately long, very slender. Length (d 71 ) 6.8 mm.; width 

 2.6 mm. California (locality unknown) fuchsi Schf. 



5 Body elongate, parallel, shining throughout and rather convex, red- 

 brown in color; head relatively large, being three-fourths as wide 

 as the prothorax, the impressions abrupt externally, gradually 

 shallow internally, oblique; eyes well developed, moderately convex; 

 prothorax as long as wide to a little longer, the sides broadly, sub- 

 evenly arcuate, a little more rounding apically and slightly more 

 converging basally, though rounded, to the obliterated and broadly 

 rounded basal angles, the base finely margined, barely two-thirds 

 the maximum width, the apex much wider than the base and having 

 nearly the maximum width, evenly and moderately sinuate, with 

 the angles rather obtuse and distinctly rounded; surface evenly con- 

 vex, excessively finely margined at the sides, the depression short, 

 linear but impressed, not attaining the base, the stria fine but rather 

 deep, not quite entire; elytra short, oblong-oval, not quite one- 

 hall longer than wide, not distinctly wider than the prothorax (cf 1 ), 

 the sides broadly arcuate, the apex rounded; striae impunctate, 



