AMERICAN COMPONENTS OF THE TENTYRIIN^ 453 



finely, sparsely punctate, with a rather pronounced obtuse ridge 

 above each eye; prothorax scarcely four times as wide as its 

 median length, of the usual form, very finely, remotely punctate, 

 abruptly coarsely but not closely so in lateral fifth to sixth, the 

 punctures elongate, tumid externally; elytra evidently longer 

 than wide, very broadly and obtusely subtruncate behind, the 

 punctures moderately small, sparse, evenly distributed, widely 

 impressed and very distinct, each with the usual extremely minute 

 granule attached anteriorly, the inflexed sides coarsely but sparsely 

 impresso-punctate ; abdomen coarsely but rather sparsely punc- 

 tate, the punctures transverse as usual and more or less muricate. 

 Length 7,8-8.7 mm. ; width 4.7-5.25 mm. Utah (southwestern). 



longipennis n. sp. 



7 — Reentering angle between the sides of the prothorax and elytra 



deep and well marked 8 



Reentering angle very broad and shallow, the sides of the prothorax 

 almost continuous with those of the elytra 13 



8 — Elytra strongly inflated, orbicular, not longer than wide 9 



Elytra more or less evidently elongate, more oval and less rotund... i 3 



9 — Head sparsely punctate, not rugose toward the sides 10 



Head coarsely and less sparsely punctate, rugose laterally ,11 



10 — Body rounded, very convex, black, dull in lustre, the legs and 



antenntE slightly picescent ; erect hairs long, sparse, ashy-white, 

 intermingled with shorter and more decumbent hairs, and very 

 feebly, indefinitely lineate on the elytra in broader lines than in 

 the ventricosus group ; head moderate, much narrower than an 

 elytron, the punctures moderately coarse, sparse throughout; an- 

 tennae shorter and stouter than in ventricosus^ the second joint 

 much longer than the fourth and but slightly shorter than the 

 third ; prothorax about three and one-half times as wide as the 

 median length, of the usual form, rather coarsely but sparsely 

 punctured, becoming very coarsely and densely so in less than 

 lateral fourth, the punctures crowded and elongate; elytra about 

 five times as long as the median line of the prothorax, less than 

 one-half wider, with very coarse, deep and subimpressed uniformly 

 distributed punctures, separated by a little more than their own 

 widths, the interspaces, bearing the shorter pubescence, not visibly 

 punctate, the inflexed sides narrower and more convex than in the 

 ventricosus group, coarsely, rather closely punctured, separated 

 from the upper surface by a line broadly convex in section and 

 not acute as in ventricosus \ under surface very coarsely and 

 closely punctate, the abdomen less coarsely and rather sparsely. 

 Length 6.2 mm. ; width 4.4 mm. Colorado. \=. Pimelia rotunda 

 Say] rotundus Say 



Body nearly similar to rotundus in form and coloration but smaller 

 and somewhat more shining, the pubescence coarser, ashy-white, 

 scarcely lineate on the elytra, the long hairs shorter, very sparse, 



