Coleo2iterological Notices. 67 



Group 5. — cordatns. 



A rather limited group containing the smallest species of the 

 genus, polished, sometimes dull, black, with the elytra always pale, 

 white or yellowish-white, clouded toward suture and base with 

 brown, piceous or black : — 



dimidiatus Lee. tiirbuleiitus n. sp. 



basalis Lee. opaculus Lee. 



ignavus n. sp. cordatns Say. 



misellus ii. sp. forcipatus Lee. 

 negleetiis ii. sp. 



B. igliaTlIS n. sp. — Slender, rather convex, parallel, black ; elytra very 

 pale, wliitish, translucent, indefinitely clouded with piceous toward suture 

 and at the base ; legs piceous, tibi?e and tarsi flavate ; antennae flavate, pice- 

 ous toward apex ; integuments polished throughout, head and prothoras very 

 finely reticulate, the reticulations on tlie latter tending to a transverse arrange- 

 ment ; abdomen more coarsely reticulate, the lines very fine. Head distinctly 

 narrower than the prothorax, very convex, neither tuberculate nor foveate, 

 rather finely, distinctly and sparsely punctate ; antennal tuberculations ex- 

 tremely siuall and feeble ; epistomal siiture very fine, feeble, not impressed ; 

 anterior angles of the epistoma very minutely but acutely and distinctly tuber- 

 culate ; antennae rather short, gradually and very strongly incrassate; second 

 joint robust, longer than the next two together ; three to six small, sixth 

 strongly transverse, eighth twice as wide as long, shorter than the ninth and 

 tenth which are rather strongly transverse, eleventh ovate, scarcely longer 

 than wide. Prothorax as wide as the elytra, nearly one-half wider than long ; 

 sides in apical two-thirds parallel and very nearly straight, then very broadly 

 rounded into the base, without lateral or basal angles ; base subtransverse in 

 the middle ; apex broadly evenly and just visibly arcuate ; apical angles right 

 and narrowly but distinctly rounded ; disk rather stronglj', evenly, trans- 

 versely convex, very finely, evenly and sparsely punctate ; median groove very 

 fine but distinct, not quite attaining the apex. Elytra quadrate, about two- 

 thirds longer than the prothorax ; sides nearly parallel and straight ; outer 

 angles very broadly rounded, inner narrowly but distinctly so ; surface not 

 distinctly impressed near the base, rather coarsely, very feebly and somewhat 

 densely punctate, the punctures separated by their own widths. AInlomen 

 slightly narrower than the elytra ; sides parallel and feebly arcuate ; surface 

 finely, sparsely punctate, beneath very minutely and sparsely punctate. 

 Length 1.9 mm. 



■ Rhode Island. 



The hypomera are flat but depressed below the lateral edges 

 which are, therefore, finely prominent ; the coxal fissures are very 

 short and narrowly open, the sutures obsolete The meatuni is 



