382 Goleopterological Notices, VII. 



long as the prothorax and nearly | wider, evenly oval, widest 

 slightly before the middle ; sides evenly and broadly arcuate 

 throughout ; humeral plica rather long and strong, the subhu- 

 meral impression large, deep and conspicuous ; subsutural im- 

 pressions nearly obsolete, the suture not beaded though very 

 feebly elevated and expanded at the immediate base ; basal foveas 

 deep, the inner small. Legs rather short, the two anterior femora 

 strongly, the four posterior rather feebl}^, clavate ; hind tarsi fili- 

 form and rather long, with the first four joints subequal ; hind 

 coxae rather widely separated. Length 0.9 mm. ; width 0.38 mm. 



Massachusetts and New York. A minute species, which can 

 be readily identified by the characters given above. The abdomen 

 is pale at apex as usual, and I can perceive no indications of 

 sexual identity. 



I have attached to this species for the present, as varietal 

 forms, a large series from Ottawa, Canada, which differs from the 

 typical form in its deep black color and stouter antennae, with 

 much stouter club, and two specimens from Illinois, which are 

 decidedly larger, black in color and with stouter antennae. 



17. E. iinpotens n. sp. — Strongly ventricose, polished, impunctate, 

 black, the elytra paler, rufo-testaceous ; legs and antennse pale, the club of 

 the latter slightly dusky; pubescence as in fahius. Head small, rounded, 

 slightly wider than long, circularly rounded behind the eyes, which are an- 

 terior but large and slightly prominent, extending fully half way to the base ; 

 antennal prominences rather distinct. A ntennse very slender, a little longer 

 than the head and prothorax, the club very abrupt and parallel ; second joint 

 about as long and very nearly as wide as the first, very feebly obconic, as long 

 as the next two and distinctly thicker, nearly twice as long as wide ; three to 

 seven equal in width, feebly obconic, all distinctly elongate ; third, fourth, 

 sixth and seventh very nearly equal, '^{, the fifth fully 3^^, longer than wide ; 

 eighth fully % wider, transverse, % wider than long ; ninth at least % wider 

 than the eighth, not more than ^ wider than long, just visibly narrower than 

 the tenth, which is distinctly shorter, % wider than long; eleventh not at all 

 thicker, obliquely pointed, much shorter than the two preceding. Prothorax 

 subquadrate, convex, not quite as long as wide, formed as in faiuus and the 

 others of this subgenus, with the subbasal fovese, impression and carinse fully 

 developed. Elytra short, inflated, not more than I4 longer than wide, only 

 slightly more than twice as long as the prothorax and about % wider, sub- 

 rhomboidal, widest and rather more strongly rounded at the sides only slightly 

 before the middle ; humeral plica broad and short but distinct, the subhumeral 

 impression small but very deep ; foveas small but deep ; subsutural impres- 

 sions narrow though rather distinct ; suture strongly beaded basally, the bead 

 suddenly and moderately expanded at base. Legs slender, the two anterior 



