136 MEMOIRS ON THE COLEOPTERA 



heavy, fully three-fourths as long as the elytra, fuscous, gradually 

 pale basally, the medial joints slightly less than twice as long as 

 wide; prothorax fully two-fifths wider than long, the sides strongly 

 rounded, oblique in basal half, gradually very moderately sinuate 

 toward the angles; base three-fourths the maximum width; fovese 

 long, linear, distant from the rather long distinct carina; elytra fully 

 one-half longer than wide, two-fifths wider than the prothorax, 

 parallel, with arcuate sides; striae fine, scarcely impressed, feebly so 

 suturally, the punctures fine but deep, not very close-set; foveae 

 near basal and apical third, the posterior the smaller. Length (cf 9 ) 

 2.35-2.8 mm.; width 0.75-1.0 mm. Summit of Mt. Washington, 

 New York (Lake Champlain) to northern Illinois and Duluth, 

 Minnesota. Abundant versicolor Lee. 



Form shorter, the surface rather more convex, deep black, highly pol- 

 ished, the elytra scarcely less so; elytra black, maculate very nearly 

 as in versicolor; legs bright rufous; head three-fourths as wide as the 

 prothorax, the eyes rather less prominent than in the preceding; 

 antennas nearly similar; prothorax relatively larger, similar in gen- 

 eral outline, the hind angles slightly obtuse, the foveae shorter, oval, 

 closer to the carina, which is notably shorter; elytra barely one-half 

 longer than wide, nearly two-fifths wider than the prothorax, more 

 obtusely rounded behind, the parallel sides similarly arcuate, the 

 striae, punctures and fovese almost as in versicolor. Length (cf 1 9 ) 

 2.4-2.5 mm.; width 0.75-0.8 mm. Rhode Island (Boston Neck). 



pellax n. sp. 



85 Body very small, rather slender, subparallel, convex, subalutaceous, 

 pale castaneous in color, the elytra slightly paler, perfectly uniform; 

 legs very pale flavate; head suborbicular, three-fourths as wide as 

 the prothorax, the subparallel sulci rather distant from the eyes, the 

 latter very moderate in prominence; antennae rather thick, four-fifths 

 as long as the elytra, fuscous, pale testaceous basally, the medial 

 joints not quite twice as long as wide; prothorax large, between a 

 fourth and third wider than long, widest at two-fifths from the apex; 

 base two-thirds the maximum width and distinctly narrower than 

 the apex; sides rather narrowly reflexed, broadly, subevenly rounded, 

 oblique in about basal half, becoming feebly sinuate toward the 

 angles, which are sharp and right; apex truncate; anterior impres- 

 sion distinct medially, the posterior broad, deep and subangular, 

 the stria very fine; foveae small, deep, sublinear, the carina short, 

 fine and indistinct; elytra oblong-oval, one-half longer than wide, 

 only a third wider than the prothorax, the parallel sides arcuate, 

 rather broadly rounding at the humeri, broadly parabolic behind; 

 striae fine, feebly impressed, entire; punctures small, feebly impressed, 

 very widely separated, except in the first two striae, the scutellar 

 stria very short, of about two punctures; foveae before basal and near 

 apical third. Length (G?) 2.4 mm.; width 0.8 mm. Ontario (Ot- 

 tawa), \V. H. Harrington muscicola Hayw. 



86 Elytra in great part black; body larger in size. Form oblong- 

 suboval, moderately convex, shining, the elytra feebly alutaceous, 

 black, the anterior parts with feeble greenish lustre; elytra without 



