64 Journal New York Entomological Society. [Vol. vin. 



tinctly though not abruptly produced posteriorly. The European 

 Pelti)ius and Corylophus differ in having very narrow horizontal 

 epipleurse and more slender tibiae. 



The species are somewhat abundant but closely allied ; those in my 

 cabinet may be recognized by the following characters : — 



Elytra finely and sparsely but more or less distinctly punctate 2 



Elytra impunctate 5 



2 — Elytral punctures very minute throughout 3 



Elytral punctures strong, especially on the descending flanks ; body smaller, more 

 rounded, very strongly subglobularly convex, blackish, the pronotum paler, with 

 narrow hyaline limb. Length 0.8 mm. ; width 0.65 mm. Iowa. 



sticticus, sp. nov. 



3 — Antennal club blackish ; body more strongly and globularly convex, black, the 

 pronotum slightly piceous, with narrow colorless hyaline margins ; scutellum 

 twice as wide as long, very broadly rounded. Length 0.9 mm. ; width 0.7 mm. 

 Canada (Ottawa) fuscicornis, sp. nov. 



Antennal club very pale, not differing in color from the shaft, body rather less con- 

 vex 4 



4 — Blackish, the pronotum rufo-piceous, sometimes entirely pale from immaturity ; 

 elytra but little more than twice as long as the prothorax ; scutellum twice as wide as 

 long. Length 0.8-0.9 mm. ; width 0.63-0.75 mm. Massachusetts, Rhode Island, 

 New York and New Jersey truncatus Lee. 



Paler, piceo-testaceous, the prothorax still paler, form more elongate-oval, the elytra 

 much more than twice as long as the prothorax ; scutellum less transverse and 

 somewhat ogival ; elytral punctures still finer, almost completely effaced pos- 

 teriorly ; size a little larger as a rule. Length 0.95 mm. ; width 0.8 mm. Iowa 

 and Nebraska hesperus, sp. nov. 



5 — Blackish, the pronotum and elytral suture rufescent ; elytral margin at and near the 

 humeri more widely subexplanate than in the preceding species. Length o. 78-0. 85 

 mm. ; width 0.65-0.75 mm. Virginia (Norfolk and Fort Monroe) 



laevis, sp. nov. 



Individuals of the various species are much more abundant than in 

 the two preceding genera, as is also the case in Rypobius. 



Rypobius Lee. 

 The body in this genus is evenly oval and rather strongly convex, the 

 pronotum evenly declivous toward the limb, which is not reflexo-expla- 

 nate and not transparent or hyaline at the edges ; the hind angles being 

 right and the apex sensibly sinuate indicates a closer affinity with Or- 

 t/ioflen/s. The integuments are minutely reticulate, and each of the 

 very minute sparse punctules bears a small and very fine decumbent 

 hair. The scutellum is less than twice as wide as long and is para- 

 bolic in form. The tarsal claws are rather long, slender and arcuate, 

 with a feeble internal dilatation at base. 



