TENEBRIONID.E i2i 



deep; humeri minutely porrect; epipleura abruptly deflexed. 

 Length 23.8 mm. Santa Cruz, Mexican Boundary Commission. 



[Pelecyphorus difformis Lee.] difformis Lee. 



B Much smaller than data, black, the elytra more or less faintly 

 rufescentsuturally; head strongly, arcuately impressed transversely, 

 the small punctures rather sparse, each with a very minute pale 

 hair; prothorax one-half wider than long, three-fifths to two- 

 thirds as wide as the elytra, as in data but with the apical angles 

 only feebly and obtusely everted, the reflexed sides not trans- 

 versely rugose but coarsely, loosely punctate to the edge, with 

 scarcely any rugae; scutellum even more than twice as long as 

 wide, slender, very acute; elytra not quite twice as long as wide, 

 the posterior acumination more rapid, the sides of the base rather 

 acutely dentiform, the surface very faintly alutaceous, the convex 

 lines narrow, the intervals very much broader, feebly rugose, as 

 convex as the lines (cf ) or nearly flat (9 ), the fine punctures as 

 in data; abdomen liearly smooth, minutely, remotely punctulate. 

 Length (cf, 9) 20.5-23.0 mm.; width 9.2-10.6 mm. Kansas 



(locality unrecorded) reducta n. subsp. 



C Nearly similar but very slender, piceous-black, the elytra wholly 

 rufous, faintly piceous on the flanks; head subopaque, impressed 

 and punctate nearly as in reducta but with the posterior impression 

 along the median line deeper and more evident; prothorax fully 

 three-fifths wider than long, nearly as in reducta, and, similarly, 

 with the apex as wide as the base, but with the apical angles still 

 more obtuse and obsoletely everted and the coarse punctures 

 laterally sparser, the rugae wholly wanting; scutellum similar; 

 elytra evidently more than twice as long as wide, very gradually 

 acute posteriorly, the base similar, much smoother than in any 

 other form, the lines broad, very feebly convex and not sharply- 

 defined, the sutural interval as wide as the first line, the second 

 twice as wide and but feebly convex, the surface scarcely at all 

 rugose, subalutaceous, the fine punctures sparse, very distinct, 

 unequal in size to some extent; side margins acute but not carini- 

 form; hind tibiae almost straight. Length (cf ) 25.5 mm.; width 



10.0 mm. Kansas (locality unrecorded) prolixa n. subsp. 



Body large, stouter, black, the elytra slightly piceous; head larger than 

 in data and allies, strongly, broadly impressed in transverse arc, 

 with small sparse punctures, each bearing a very small but coarse 

 fuscous hair; prothorax three-fifths wider than long, two-thirds as 

 wide as the elytra, of the same general form and sculpture as in the 

 preceding, the broadly sinuate apex somewhat wider than the base, 

 the apical angles minute, slightly blunt, feebly everted; surface 

 broadly, evenly convex, finely, sparsely punctate, the rather broadly 

 reflexed sides densely, coarsely punctate, becoming transversely 

 and closely rugose along the edge throughout; scutellum broader, 

 nearly one-half longer than wide, very acute; elytra twice as long 

 as wide, more oblong-oval or less narrowed basally, the apex more 

 abruptly produced or lobiform, the sides of the base acutely denlic- 



