58 Journal New York Entomological Society. [voi. viii. 



erally shaded a little darker ; l)asal 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, deej) 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). 



abdoininalis, sp. nov. 



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

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

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

 rounded; scutellani distinct. Length 1.7 mm.; width 0.95 mm. Texas (Co- 

 lumbus ) t exan a Csy. 



Basal stria of the elytra much abbreviated externally ; size minute 10 



10 — Basal angles of the prothorax normally acute 11 



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 tliroughout, the entire 



abdomen abruptlypale 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- 



tenniij moderate. Length 1. 3 mm. ; width 0.72 mm. jNIichigan. 



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 

 I.15-I.25 mm. ; width c. 65-0. 7 mm. Pennsylvania (near Philadelphia) and 

 Michigan picea 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. 



N'ana is a very widely distribtited species of minute size, and is 

 quite aberrant in the form of the basal angles of the prothora.x: 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 Scaphisonm 

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

 and thicker antenna;, situated at a greater distance from the eyes, 



