142 Trans. Acad. ISci. of St. Loins. 



with the sides evenly and strongly arcuate throughout, three-fifths 

 wider than long, finely, somewhat closely punctured; elytra distinctly 

 wider than the prothorax, the sides equal in length to those of the 

 latter, the buture nearly three-fourths as long as the median line, the 

 punctures rather fine, sparse and uneven; abdomen nearly as in pleurali» 

 but rather less coarsely and more sparsely punctured. Length 3.8 mm. ; 

 width 1.2 mm. Kansas (Douglas Co.), — F. H. Snow.ellipsicollis n. sp. 



13 — Elytra pale flavo-testaceous, shaded with blacki^h-piceous at the sides 



behind the humeri 14 



Elytra pale ar d uniform in color throughout 15 



14 — Form moderately stout, somewhat rounded at the sides when con- 



tracted, shining, blackish-piceous, the abdomen blacker with the tip 

 rufesceut;-head small, not much more than two-fifths as wide as the 

 prothorax, sparsely, feebly punctate; antennae much longer than the 

 headend prothorax, gradually stout distally, the penultimate joints as 

 usual but little wider than long, the second joint much more elongate 

 than in pleuralis and almost as long as the third; prothorax shorter and 

 more transverse than in pleuralis and less narrowed anteriorly; elytra 

 shorter than the prothorax, the suture three-fourths as long as the 

 latter, the punctures rather fine but distinct, somewhat at^perate and 

 evenly, moderately closely placed; abdomen strongly narrowed from 

 the base, coarsely, sparsely punctured as usual, the sixth tergite nar- 

 row, truncate ; hind tart>i long, almost as long as the tibiae, the first 

 joint distinctly shoiter than the next three together. Length 4.0 mm.; 

 width 1.18 mm. Massachusetts , americana n. sp. 



Form stouter, the size larger, shining, black, the elytra except on the 

 flanks and about the scutellum, the tip of the fifth and entire sixth 

 ventrals, bright rufous; antennae dusky, the basal parts and legs pale, 

 the femora somewhat dusky on the under surface; head not quite half 

 as wide as the prothorax, minutely, sparsely punctulate, the antennae 

 long, extending to the middle of the elytra, the subapical joints 

 slightly transverse, the third greatly elongated and very much longer 

 than the second ; prothorax strongly transverse, two-thirds wider than 

 long, distinctly narrowed toward tip, the sides broadly rounded, rather 

 more strongly toward ba&e, the latter evenly but not strongly arcuate, the 

 punctures fine, rather sparse; elytra transverse, scarcely wider than the 

 prothorax, the outer side equal in length to the side of the latter, the su- 

 ture two-thirds as long as the median line, the punctures fine, even, only 

 feebly asperate and well separated ; abdomen at base as wide as the elytra, 

 very sparsely and only moderately coarsely punctured, only slightly 

 narrowed thence to the tip of the fifth segment, the sixth broader than 

 in americana and wholly red; hind tarsi much shorter than the tibiae, 

 with the basal joint as long as the last two combined, shorter than the 

 succeeding three. Length 4.5 mm.; width 1.4 mm. Colorado (Bueca 

 Vista),— H. F. Wickham postpicta n. sp. 



Form still stouter, shining, black, the elytra, except on the flacks and about 

 the scutellum, dark piceo-rufous, the sixth ventral not much paler, 

 piceous-black; antennae black, dark rufo-piceous toward base, the 

 legs paler, piceo-rufous; head much larger than in postpicta, fully half 

 as wide as the prothorax, the antennae distinctly longer than the head 



