AMERICAN COMPONENTS OF THE TENTVRIIN^ 323 



Apical angles broadly rounded, the sides converging; epistoma some- 

 what projecting and truncate; color pale testaceous 24 



21 — Sides before the eyes feebly arcuate 22 



Sides before the eyes straight ; body rufo-castaneous, the under surface 



paler and the legs rufous 23 



22 — Form narrow, oblong, subparallel, piceous-black, the legs rufous ; 



head rather coarsely and muricately, evenly ])ut not very densely 

 punctate ; prothorax not quite twice as witle as long, widest at the 

 middle, feebly narrowed and distinctly sinuate at apex, the sides 

 subevenly, rather strongly arcuate, becoming straight or feebly 

 sinuate anteriorly, with the angles somewhat acutely prominent; 

 surface somewhat shining, not very finely or closely, muricately 

 punctate, the punctures rather coarse and almost in longitudinal 

 contact at a short distance from the sides, then well separated and 

 equally coarse to the side margins ; scutellum punctate in anterior 

 half ; elytra fully one-half longer than wide, barely three times as 

 long as the prothorax and slightly wider, very obtusely rounded 

 at apex, parallel, the sides nearly straight, the humeral callus 

 pronounced; surface shining, with even, unimpressed series of 

 rather coarse, not very close-set or distinctly muricate punctuj'es, 

 the intervals with almost even series of similar but slightly less 

 coarse punctures ; abdomen not very finely, feebly, sparsely punc- 

 tate. Length 4.4 mm.; width i .88 mm. New Mexico (Las 

 Cruces) famelica n. sp. 



Form much stouter, convex, polished throughout, dark castaneous, 

 the abdomen rufo-piceous, the legs bright rufous; head with 

 rather small, non-muricate and notably sparser punctures, 

 shining; prothorax very nearly twice as wide as long, distinctly 

 narrowed but rather feebly sinuate at apex, the sides strongly but 

 unevenly rounded, strongly converging and straight toward both 

 the anterior and posterior angles, the former not prominent and 

 obviously obtuse; surface polished, with rather small but deep, 

 perforate, non-muricate and well separated punctures medially, 

 becoming rather coarse and close laterally but still slightly 

 separated and only feebly muricate near the margins; elytra oval, 

 less than one-half longer than wide, more than three times as long 

 as the prothorax and, behind the middle, slightly wider, the 

 sides broadly arcuate, the apex very obtusely ogival ; punctures 

 coarse, not very close-set, evenly serial, beooming very coarse 

 laterally, especially toward base, the interstitial punctures only 

 slightly less coarse and subevenly serial but more remotely 

 spaced; abdomen finely, sparsely punctate. Length 5.0 mm.; 

 width 2.22 mm. New Mexico (Deming), — II. F. Wickham. 



lustrella n. sp. 



23 — Body oblong-oval, not very stout, convex; head with moderately 



coarse, close and subscabrous punctures, the median parts of the 

 occiput more sparsely punctate; prothorax shining, four-fifths 

 wider than long, moderately narrowed and sinuate at apex. 



