58 Journal New York Entomological Society. [Voi.vm. 



erally shaded a little darker ; basal stria of the elytra fine, disappearing com- 

 pletely somewhat before attaining the middle of the width. Length 1.15 mm.; 

 width 0.6S mm. Pennsylvania (near Philadelphia) pallida, sp. nov. 



Body strongly convex longitudinally, smaller in size, deep black, the elytra rufescent 

 toward tip ; under surface blackish, the abdomen and legs fulvous ; metepi- 

 sternal suture much shorter and very coarsely excavated ; basal stria of the elytra 

 stronger and only interrupted for a short space just beyond the middle of the 

 width. Length 0.88 mm.; width 0.62 mm. Massachusetts (Tyngsboro). 



abdominalis, sp. nov. 



9 — Basal stria of the elytra entire ; body larger, blackish throughout, the elytral 

 apices very narrowly rufescent ; antennae moderately long and slender, bristling 

 with rather long stiff setae ; basal lobe of the pronotum rather feeble and broadly 

 rounded; scutellum distinct. Length 1. 7 mm.; width 0.95 mm. Texas (Co- 

 lumbus) texana Csy. 



Basal stria of the elytra much abbreviated externally ; size minute IO 



10 — Basal angles of the prothorax normally acute II 



Basal angles obtusely truncate at tip ; metepisternal suture arcuate 14 



II — Scutellum very short and indistinct; abdomen concolorous ; metepisternal suture 



straight 12 



Scutellum distinct and longer than usual ; body deep black throughout, the entire 



abdomen abruptly pale rufous ; size very minute 13 



12 — Metepisternal suture coarse ; scutellum extremely small, short and very transverse ; 

 body very smooth and polished, rufous throughout, the pronotum piceous ; an- 

 tenna; moderate. Length 1.3 mm. ; width 0.72 mm. Michigan. 



discolor, sp. nov. 



Metepisternal suture finer ; scutellum less abbreviated, but little more than twice as wide 



as long ; body rufo-piceous to blackish in color, the abdomen pale at tip. Length 



1. 15-1. 25 mm. ; width c.65— 3-7 mm. Pennsylvania (near Philadelphia) and 



Michigan p icea Csy. 



13 — Rather narrowly oval, highly polished and impunctate ; metepisternal suture 

 feebly arcuate, fine and rather distinctly punctured ; mesepimera rather small and 

 narrow, scarcely extending more than half way to the coxa;. Length 0.95 mm. ; 



width 0.55 mm. Rhode Island (Boston Neck) rubriventris, sp. nov. 



14 — Rather stout, polished, black throughout above and beneath, the legs feebly 

 rufescent. Length 0.9-1.0 mm. ; width 0.58-0.68 mm. Rhode Island (Boston 

 Neck), Massachusetts, Michigan and Texas (Austin) nana Csy. 



Nana is a very widely distributed species of minute size, and is 

 quite aberrant in the form of the basal angles of the prothorax and in 

 the strongly arcuate metepisternal suture, but it does not differ gener- 

 ically. 



Scaphiomicrus, gen. nov. 



The species described by LeConte under the name Scaphisoma 

 pusilla, must form the type of a distinct genus because of the shorter 

 and thicker antennae, situated at a greater distance from the eyes, 



