AMERICAN COMPONENTS OF THE TENTYRIIN^ 465 



5 — Form slender ((^) or rather stout ( 9 )» convex, dull in lustre, with 

 comparatively much more shining elytral tubercles; head not 

 coarsely, very remotely punctate ; prothorax evidently shorter than 

 wide, the sides very obtusely and feebly prominent at apical two- 

 fifths, thence rather feebly converging and straight, then rounded 

 to the apex, strongly converging, broadly aixuate and tuberculate 

 between the feeble sinuses to the base, which is much narrowed, 

 with coarsely elevated margin ; surface only moderately coarsely, 

 scarcely at all muricately, sparsely and very irregularly punctate, 

 more coarsely and closely only very near the sides anteriorly ; 

 elytra not quite twice as long as wide, two-thirds longer than the 

 prothorax and not quite as wide, with large, moderately elevated, 

 close-set and sometimes coalescent tubercles, without evident lin- 

 ear arrangement, the interspaces very finely, remotely, feebly and 

 simply punctate ; prosternum coarsely, irregularly foveato-tuber- 

 culose, the abdomen sparsely punctured, very coarsely basally, 

 rather finely behind the first two segments. Length 17. 0-18.0 

 mm.; width 5.S-6.3 mm. New Mexico (Cloudcroft), — War- 

 ren Knaus morosus n. sp. 



Form slender, convex, dull in lustre, the elytral tubercles relatively 

 rather strongly shining, head finely, remotely punctate ; protho- 

 rax about as long as wide, the sides feebly subangulate at apical 

 two-fifths, thence feebly converging and straight very nearly to 

 the apex, where they become strongly rounded, moderately strongly 

 converging, only very feebly arcuate but densely tuberculose to 

 the base, the latter coarsely elevated; surface somewhat finely 

 punctate, the punctures rather sparse but very uneven in distribu- 

 tion, each at the posterior end of a comparatively large flattened 

 tubercle, the punctures similar laterally but with the tubercles 

 smaller and more sharply elevated ; scutellum minute, transversely 

 rounded ; elytra scarcely twice as long as wide, three-fourths 

 longer than the prothorax and equally wide, with rather large, 

 well separated, very strongly elevated rounded tubercles, indis- 

 tinctly arranged in series, the intervals with fine, sparse, muricate 

 punctures ; prosternum evenly, strongly tuberculose, each tuber- 

 cle with a very fine attendant puncture ; abdomen sparsely punc- 

 tured ; coarsely on the first two segments. Length 15.0 mm.; 

 width 5.2 mm. New Mexico (Fort Wingate). 



verrucipennis n. sp. 



6 — Body moderately stout, convex, shining; head sparsely and very 

 coarsely punctate ; prothorax not quite as long as wide, feebly 

 but angularly dilated at apical two-fifths, the sides thence moder- 

 ately converging and straight to the strong apical arcuation, more 

 strongly converging, arcuate and tuberculose between the two 

 sinuses to the base, the latter with an irregular elevated margin ; 

 surface coarsely, unevenly and not very sparsely punctate, the 

 punctures muricate or subtuberculiferous, not differing much 

 toward the sides though a little finer and less muricate posteriorly ; 



