282 Trans. Acad. Sci. of St. Louis. 



lobe semlclrcularly emarginate, the lateral projections moderately acute. 

 Length 1.2 mm.; width 0.45 mm. Pennsylvania (near Philadelphia). 



hnmeralis n. sp. 

 Elytra uniform in coloration throughout or with the humeri almost imper- 

 ceptibly paler 6 



5 — Elytra very short, but slightly longer than the prothorax 6 



Elytra very distinctly longer than the prothorax 10 



€ — Abdomen black or blackish throughout when mature 7 



Abdomen dark testaceous, clouded with black posteriorly 9 



7 — Prothorax less transverse, evidently less than twice as wide as long. 



Form only moderately atout, polished, reticulate, piceous in color, the 

 abdomen blackish, the legs and antennae bright flavate; head nearly as 

 in hiimeralis ; prothorax slightly wider than the head, about three - 

 fourths wider than long, finely, sparsely punctate, without distinct 

 median impunctate line, very obsoletely impressed before the ecutellum, 

 the base strongly arcuate; elytra slightly wider than the prothorax, the 

 suture equal in length to the median line of the latter, the punctures 

 fine and not very close-set, nearly as in humeralia, the abdomen nearly 

 similar. Male with the produced lobe of the sixth tergite deeply and 

 parabolically emarginate throughout its width, the emargination wider 

 than deep, the lateral projections very narrowly obtuse at tip. Length 

 1.0 mm. ; width 0.38 mm. Texas (Dallas), — H. F. Wickham. 



texanella n. sp. 

 Prothorax extremely transverse, more than twice as wide as long 8 



8 — Form stout, compact, suboval, polished, blackish-piceous, the legs and 



antennae flavate; micro-reticulation distinct as usual; pubescence 

 sparse, stiff and suberect; head as in humeralia but relatively smaller; 

 prothorax very short, distinctly wider than the head, the sides strongly 

 arcuate, the base broadly so, not impressed, very finely, sparsely and 

 irregularly punctured except along a very ill-defined median line; elytra 

 only very slightly wider than the prothorax, the suture very slightly 

 longer than the median line of the latter, the punctures fine and rather 

 more close-set than in the two preceding species; abdomen similar. 

 Male with the emargination of the broad median lobe of the sixth 

 tergite circular and shallow, nearly three times as wide as deep, the 

 lateral projections broadly obtuse at tip. Length 0.95-1.2 mm.; width 

 0.88-0.4 mm. North Carolina (Asheville) to Texas. [= Qyrophaena 



aoc. Er.] socia Er. 



Form nearly similar, polished, strongly micro-reticulate, the head and 

 prothorax black with a feeble piceous tinge, the elytra slightly paler, 

 piceous, with the humeri generally very slightly paler piceous; abdo- 

 men black throughout, the legs and antennae fiavate; head as in aocia, 

 the prothorax nearly similar, being quite as distinctly wider than the 

 head and more than twice as wide as long, but with the sparse punc- 

 tures rather stronger and the impunctate median line more convex or 

 bordered at each side by a feeble impression; elytra much more dis- 

 tinctly wider than the prothorax, the humeri rounded and somewhat 

 exposed, the suture slightly longer than the median line of the pro- 

 thorax, the punctures fine, asperulate and close-set; abdomen similar. 

 Male with the lobe of the sixth tergite broader and more broadly emar- 



