AMERICAN COMPONENTS OF THE TENTYRIIN^ 417 



impressed sutural lines toward tip, with moderately coarse, sparse 

 and impressed punctures, becoming but little larger, only slightly 

 less sparse and, as usual, more shallow and less impressed or 

 more sharply defined laterally ; abdomen with only moderately 

 fine, dense punctures and minutely rugulose and but slightly shin- 

 ing medially. Length 10. 3-10. 4 mm. ; width 4.2-4.3 mm. 

 Western Arizona. \^=:Epitrag7(s pruinosits Horn, — California 

 (Owen's Valley)] pruinosa Horn 



Form stouter, very convex, highly polished, darker in color and more 

 properly deep rufo-piceous, the minute yellowish hairs inconspic- 

 uous ; head moderately sparsely punctured, closely so laterally 

 and apically ; prothorax more transverse, very nearly one-half 

 wider than long, the apex three-fourths as wide as the base, evenly 

 though very feebly sinuate, the angles evidently more than right 

 and somewhat blunt, the sides nearly as in pruinosa,, the surface 

 broadly convex, with the sublateral basal impressions very feeble 

 though having notably less coarse, closer punctuation, the "jDunc- 

 tures only moderately small, strongly impressed and rather 

 sparse, becoming very coarse, conspicuous and rather close-set 

 near lateral sixth and again much smaller and dense very near 

 the sides, the disk with an oblong irregular impunctate space at the 

 middle of the length on each side near lateral fourth and another on 

 the median line near the base; scutellum wnder than long; elytra 

 widest rather behind the middle, obese, somewhat rapidly acutely 

 ogival behind, the sides feebly arcuate to the obtuse humeri, which 

 are not much exposed, the callus moderate and elongate, the sur- 

 face somewhat uneven, with the punctures rather coarse, very 

 sparse, becoming still coarser but less sparse laterally ; under sur- 

 face polished as usual but with the entire abdomen strongly, moder- 

 ately finely, very densely punctured and opaque. Length 1 1 .0 

 mm.; width 4. S mm. (9)- New Mexico (Deming), — H. F. 

 Wickham densiventris n . sp. 



Form very moderately stout, shining, the elytra alutaceous posteriorly, 

 dark brownish-testaceous ; head coarsely, sparsely punctured, less 

 sparsely toward the eyes and front, the punctures impressed; 

 prothorax two-fifths wider than long, the apex four-fifths as wide 

 as the base, subtruncate, being only just visibl}' sinuate, the angles 

 slightly obtuse but not at all rounded, the sides distinctly, sub- 

 evenly arcuate, becoming straight only toward base, the surface 

 not impressed but with smaller, though sparse, punctures toward 

 base near lateral fifth, the punctures rather fine and very sparse 

 throughout medially, becoming only moderately coarse but sparse 

 laterally and less coarse, close though distinctly separated near the 

 sides ; scutellum moderate, wider than long, broadly ogival or an- 

 gulate behind; elytra with feebly arcuate sides, gradually more 

 arcuate and acutely ogival posteriorly, the humeri but little ex- 

 posed at base, with the callus elongate and distinct, the punctures 

 fine and very sparse, becoming only a little less fine and still sparse 



