HARPALIN.E 279 



sinuate, with obtusely rounded angles, more exactly equal in width 

 to the base; surface similar, except that the latero-basal area, in- 

 volving the extremely feeble foveae, is subdeplanate and finely, very 

 feebly, rather irregularly punctulate throughout; elytra larger, fully 

 one-half longer than wide, two-fifths wider than the prothorax, 

 parallel, the apex not so circularly rounded but more obtuse and 

 bioblique, the sinus obsolete; stria; rather less coarse, the scutellar 

 longer, the intervals less convex; hind tarsi longer, the first and fifth 

 joints equal in length; male with the anterior tarsi rather strongly, 

 the intermediate feebly, dilated, the latter much less slender than in 

 the preceding. Length (cf 9 ) 6.5-6.8 mm.; width 2.5-2.65 mm. 



Texas (El Paso). Four examples semitinctus n. sp. 



21 Scutellar stria short though always distinct 22 



Scutellar stria generally obsolete 23 



22 Form oblong-oval, rather stout and convex, very shining, black, the 

 thoracic margins finely, diaphanously pale, the lateral margin of the 

 elytra posteriorly, and sometimes the suture, pallescent; under sur- 

 face black, the legs very pale throughout; head well developed, with 

 moderately prominent eyes, two-thirds as wide as the prothorax, 

 the antennae very long and filiform, blackish, the two basal joints 

 pale; prothorax transverse, two-fifths wider than long, widest some- 

 what before the middle, but with subevenly and rather strongly 

 rounded sides; apex feebly sinuate, with narrowly blunt angles, 

 subequal in width to the base, the basal angles very broadly rounded; 

 surface smooth, with very fine and subentire stria and isolated, 

 obliquely rounded foveae, which are generally very feebly impressed 

 and with a few strong punctures basally ; elytra about one-half longer 

 than wide and only a fourth wider than the prothorax, parallel, 

 feebly arcuate at the sides, obtuse at apex, the sinus broad and feeble 

 but evident; striae rather fine but deeply impressed, the scutellar 

 short and oblique though always evident; intervals rather strongly 

 convex, very faintly opalescent in lustre, the discal puncture at three- 

 fifths to two-thirds; hind tarsi slender, two-thirds as long as the 

 tibiae, the basal joint as long as the next two and longer than the 

 fifth; male with the anterior tarsi rather strongly, the intermediate 

 feebly, dilated. Length (cf 9 ) 4.4-4.8 mm.; width 1.6-2.0 mm. 

 Rhode Island to Missouri and Texas. Very abundant. [Acupalpus 



lugnbris Hald.] plebejus Dej. 



Form nearly similar but shorter and with relatively broader elytra, 

 differing greatly in coloration, being pale testaceous, apparently 

 when mature, the head deep black, the pronotum with a large 

 central transverse blackish area; elytra clear testaceous throughout; 

 under surface piceous-black, the sides of the prosternum, epipleura 

 and legs very pallid; head and antennae nearly as in plebejus; pro- 

 thorax also similar in every way, except that it is relatively larger and 

 broader, one-half wider than long, with more rounded sides, still 

 more broadly rounded basal angles and still more finely reflexed mar- 

 gins; elytra notably shorter, not one-half longer than wide and not a 

 fifth wider than the prothorax, otherwise nearly similar; hind tarsi 

 and male sexual characters nearly as in plebejus. Length (cf 1 9 ) 



