314 



CASEY 



4 — Surface of the pronotum obliquely and feebly prominent toward 



the basal angles 5 



Surface of the pronotum evenly convex near the posterior angles 8 



5 — Pronotum not very obviously impressed near the sides at base; 



body stouter in form 6 



Pronotum with a large rounded impression, at base laterally, between 

 the oblique prominence and the basal margin 7 



6 — Body stout, oblong, feebly alutaceous, castaneous, the under sur- 



face and legs paler, rufous ; head rather finely, muricately, some- 

 what unevenly but not densely punctate, broad, the sides but feebly 

 converging before the eyes and strongly arcuate, becoming parallel 

 at the eyes, which are large ; prothorax three-fourths wider than 

 long, widest distinctly behind the middle, where the sides are 

 rather strongly rounded, thence converging and evenly, very feebl}^ 

 arcuate to the apical angles, which are not in the least everted ; 

 punctures fine and sparse, with a narrow impunctate median line, 

 stronger, muricate and closer but still well separated laterally; 

 elytra two-thirds longer than wide, not quite four times as long 

 as the prothorax and a fourth wider, obtusely rounded in apical 

 third, the sides very feebly arcuate, the punctures small, muricate, 

 slightl}' larger laterally, close-set in rather even, broadly and 

 feebly impressed series, the intervals minutely, sparsel}', irregu- 

 larly punctate. Length 7.0 mm. ; width 3.1 mm. Texas (near 

 El Paso) muricatula Csy. 



Body nearly similar in coloration and lustre, the under surface more 

 blackish ; head rather smaller, with somewhat sparser and still 

 more irregular punctures but otherwise similar, except that the 

 transverse epistomal surface is more tumid ; prothorax very much 

 shorter and more transverse, widest near the middle, narrowed at 

 apex, twice as wide as long, the sides subevenly and strongly 

 arcuate throughout, except for a very short distance at the apical 

 angles, which are prominently everted, the punctures still more 

 minute and sparser, with a much less elongate impunctate line, 

 coarser, closer and muricate but distinctly separated toward the 

 sides ; elytra shorter, three-fifths longer than wide, less than four 

 times as long as the prothorax and not over a fifth wider, obtusely 

 parabolic in apical third, the punctures finer, arranged in similar 

 series, which are however less impressed, the interstitial punc- 

 tures extremely minute, sparse and irregular. Length 6.^ mm. ; 

 width 2.S mm. Texas (near El Paso) prominens n. sp. 



Body stout and strongly convex, oblong, strongly shining, pale rufo- 

 testaceous throughout ; head rather finely but deeply, sparsely and 

 non-muricately punctate, very densely so anteriorly, the sides mod- 

 erately converging and strongly arcuate, the apex feebh^ sinuato- 

 tnmcate ; prothorax scarcelv more than two-thirds wider than 

 long, widest slightly behind the middle, the sides rather strongly 

 arcuate, becoming straight toward the apical angles, which are 

 right and not rounded, the apex lalhcr feebly sinuate and four- 



