CETONIUSLE 353 



scutellum with numerous small and some larger shallow foveolae; 

 elytra elongate, nearly one-half longer than wide, very feebly 

 narrowed from the slightly prominent humeri, the external apical 

 angles very broadly rounded; surface not in the least bilineate, but 

 with the very small flat areolae at the bottoms of coarse, sparse and 

 deeply impressed punctures, in a manner differing from any other 

 species, rendering the general surface decidedly rugose; puncture? 

 on the flanks of the same nature but much smaller; pygidium evenly 

 convex, with deep sparse moderate punctures; two teeth of the an- 

 terior tibiae well developed, the hind tarsi strongly compressed but 

 long, slender on the edge, as long as the tibiae. Length 10.0-10.8 



mm.; width 4.2-4.7 mm. Kansas and Nebraska nitens Lee. 



Posterior angles of the prothorax not or but very slightly retracted, 

 though well differentiated from the general surface by an oblique 



impression; anterior tibiae always bidentate as usual 10 



Posterior angles small, slightly projecting from the lateral part of the 

 base, but not denned by an oblique impression; body generally of 

 larger size, with more even, less depressed and more feebly sculptured 

 elytra, the hind tarsi notably short, strongly compressed and compact 

 as a rule. Southern California and neighboring parts of Arizona. . 22 



10 Smooth hind angles notably large in size and reflexed n 



Smooth hind angles small in size and not reflexed in plane 19 



1 1 Clypeus carinate medially. Body oblong, parallel, deep black, feebly 

 shining, the legs and under surface polished; erect pubescence sparse, 

 fulvo-cinereous and only moderately long; head strongly, densely 

 punctate, the punctures polygonally crowded, the surface flat, 

 rather abruptly declivous anteriorly along a horizontally angulate 

 line, the steep slope finely, feebly punctulate, the clypeus strongly 

 reflexed, sinuato-truncate, barely as wide as the head, the carina fine 

 but distinct, entire; mentum concave, evenly rounded, without trace 

 of lateral sinus, the entire posterior edge forming an even angle with 

 straight sides; prothorax large, two-fifths wider than long, with 

 evenly rounded, anteriorly slightly more converging, sides, the 

 apical cavities not at all tending to lateral extension; hind angles 

 bordered internally by a small deep basal sinus, the base truncate; 

 surface subevenly and feebly convex, with coarse, close-set, feebly 

 impressed flat areolse, coarser and polygonally crowded toward the 

 sides, each bearing a very coarse short erect hair; scutellum with 

 numerous large rounded areolae; elytra more than two-fifths longer 

 than wide, just visibly narrowed from the base and a fourth wider than 

 the prothorax, the humeri scarcely at all prominent laterally, the 

 apical angles broadly rounded; surface very depressed and flat on 

 the disk, abruptly nearly vertical at the sides along a feebly tumid 

 line, the areolae rather close-set, large, flat, oval, shallow, very opaque 

 black and, though only feebly impressed, thus giving a coarsely 

 cribrate effect, the punctures coarse, deep and crowded at the sides; 

 pygidium opaque, shining at apex, coarsely variolate; two anterior 

 tibial teeth well developed, the hind tarsi strongly compressed, three- 

 fourths as long as the tibiae, the joints not impressed basally on their 

 T. L. Casey, Mem. Col. VI, Nov. 1915. 



