384 MEMOIRS ON THE COLEOPTERA 



preceding and bluish-cinereous, somewhat as in the three following 

 species. Length (9) n.8 mm.; width 3.8 mm. Utah. 



monticola n. subsp. 



25 Under surface of the body red, excepting the median parts of the 

 metasternum and the abdomen, which are black or blackish, the 

 met-episterna always red. Body moderately stout, shining, bright 

 red, the cinereous hairs of the upper surface very inconspicuous, the 

 erect hairs rather long, cinereous, black basally and on the prothorax; 

 dense vestiture of the under surface coarse and bluish-cinereous; 

 legs red, the tarsi black; head coarsely, sparsely punctate, the antennae 

 annulate, black and not quite as long as the body (cf ), the scape red; 

 prothorax transverse, with strong and broadly rounded lateral 

 prominences, the umbo rather narrow, very strongly and abruptly 

 elevated, sparsely punctate; elytra moderately elongate, slightly 

 swollen at the humeri, coarsely, rather closely punctate, the spots 

 moderate in size, the post-humeral generally obsolete. Length 

 (cf) 13.0-14.0 mm.; width 5.0-5.2 mm. Arizona (southern). 



Levette collection. Three similar examples ruber n. sp. 



Under surface of the entire hind body deep black 26 



26 Form moderately stout, shining, deep red, the vestiture above very 

 feeble and indistinct, beneath slaty-blue; erect hairs rather long, 

 stiff, black; legs black, the femora and generally the first two tibiae 

 red; antennae rather long and heavy, the scape red; prothorax nearly 

 as in the preceding; elytra with rather coarse but somewhat distant 

 punctures, the spots relatively rather small, the post-humeral 

 generally wholly wanting; anterior and middle tarsi (cf ) with the 

 basal joint much more dilated than that of the posterior, the middle 

 tarsi nearly as long as the tibiae; male with the fifth ventral slightly 

 longer than the fourth, the apex broadly truncate medially; upper 

 and lower flat horizontal plates of the intromittent organ broad, 

 parallel sided, abruptly and rapidly, arcuately narrowed at apex and 

 acutely produced medially for a short distance, the two plates 

 subsimilar in form and rather closely applied. Length (cf 9 ) 

 11.2-14.6 mm.; width 4.0-5.5 mm. Arizona (Oak Creek Canon), 



F. H. Snow spissicornis n. sp. 



Form stout, larger, broadly convex, similar in coloration and vestiture; 

 antennae rather long and thick, similarly annulate and with the basal 

 joint red; head coarsely, not closely punctate; prothorax nearly as in 

 the preceding, the very strongly elevated and extremely abrupt 

 umbo parallel, with its sides evenly and barely visibly arcuate, 

 coarsely punctate except toward its lateral edges and defined at 

 base by a fine deep transverse groove; elytra coarsely, very evenly 

 but not very closely punctate, the spots all present but small, except 

 the posterior, which is well developed; surface with the feebly 

 pruinose covering of cinereous hairs removed in a small spot near 

 the apices as in velutinus. Length (9) 17-5 mm.; width 6.5 mm. 

 Mexico (Durango City), Wickham *fortis n. sp. 



Elegans Horn, is the most aberrant of our species in the absence 

 of the four pronotal spots and very strongly elevated and extremely 



