326 MEMOIRS ON THE COLEOPTERA 



to the distinct but not prominent angles; apex truncate to faintly 

 bisinuate; surface with coarse shallow and rather close-set punctures, 

 each with a large white scale, the latter smaller and dense apically; 

 prothorax short, distinctly more than twice as wide as the median 

 length, the sides obtusely prominent just behind the middle, coarsely, 

 very sparsely punctate, each puncture with a very large broad scale, 

 the scales very dense along the impressed median line, in a broken 

 lateral vitta and along the base from the vitta not quite to the middle, 

 the sparse hairs as in the preceding; scutellum with large dense 

 white scales throughout; elytra nearly one-half longer than wide, 

 barely at all wider than the prothorax, the lines of aggregated scales 

 very distinctly denned throughout, the scales broad, not three times 

 as long as wide, dense along the suture, large in discal lines 1-3-5, 

 smaller and more close-set but not dense in the intervening lines; 

 pygidium clothed rather closely, more densely basally, with broad 

 white scales, which are less than twice as long as wide and similar 

 throughout; abdomen sparsely squamose and hairy, the scales very 

 dense along the apices of the segments; middle tarsi as long as the 

 tibiae, the posterior distinctly shorter; antennal club moderate, pallid, 

 more than twice as long as the stem. Length 22.5 mm.; width 10.3- 

 10.7 mm. Texas (near El Paso), Dunn. Three specimens. 



oblita n. sp. 



A Similar to oblita in general form, color, palpi, antennae and vestiture, 

 but larger and rather stouter; head and prothorax nearly similar 

 but with the latter not so short, only very little more than twice 

 as wide as the median length and with the condensation of scales 

 along the base inwardly from the sublateral vittae much less evi- 

 dent, the scales everywhere not quite so broad in form; aggregated 

 lines of elytral scales similarly abruptly outlined but with the 

 scales much sparser in the lines and of narrower, more elongate 

 form, though similarly alternating in size and more notably in 

 width, the smaller scales of the alternating lines partially of very 

 slender form; pygidium more sparsely clothed throughout with 

 smaller and distinctly more slender scales; legs and tarsi similar. 

 Length 23.0-25.0 mm.; width 10.3-11.8 mm. New Mexico. 



Three specimens impigra n. subsp. 



6 Last joint of the maxillary palpi slender, the outer side with an 

 elongate flattened area, which is sometimes even feebly impressed. 7 



Last joint a little stouter, the outer side convex, not flattened 8 



7 Form subcylindric, testaceo-ferruginous, sparsely clothed with small 

 white scales, more cylindric than cavifrons and paler in color; 

 clypeus with anteriorly diverging sides and well denned angles, the 

 vertex with yellow hair; prothorax a little more than twice as wide as 

 long, the sides almost angulated, narrowed very much in front and 

 moderately behind, the surface anteriorly without hairs in the type, 

 which was found mutilated and presumably dead, with the anterior 

 tibiae much worn; densely squamose dorsal channel and sublateral 

 vittae somewhat as in the lo-lineata section, the lustre shining and 

 the punctures moderate, the hind margin fringed; elytra shining, 

 coarsely rugose and punctured, with the suture and three vittae on 



