284 MEMOIRS ON THE COLEOPTERA 



in the female. Length (cf 9 ) 20.0-23.5 mm.; width 8.0-9.3 



Arizona (probably southern), Levette corrugans n. sp. 



A Nearly as in corrugans but smaller and with less elongate hind body, 

 this being (c?) three-fourths longer than wide, black, densely 

 alutaceous; prothorax similarly small but with the stronger punc- 

 tures near the base much larger; elytra more obtuse at apex, 

 similar in sculpture, the last dorsal not red but black, rufescent 

 at the apical margin; fifth ventral more narrowly sinuate at tip, 

 the femora less strongly inflated than in the male of corrugans. 

 Length (cf) iS.o mm.; width 7.8 mm. Arizona (probably 

 southern), Levette ovipennis n. subsp. 



In corrugans the form is much narrower and more convex than 

 in appressa, but the longitudinal corrugations of the elytra are 

 occasionally obsolete, the surface becoming smooth. Ovipennis is 

 probably rather a species than a subspecies, the habitus being 

 evidently different. 



Subgenus Collapteryx Newm. 



First antennal joint not mucronate at tip; basal joint of the hind tarsi 

 shorter, though longer than wide as a rule; anterior parts rela- 

 tively more developed. 



Prothorax with a spiniform projection at each side just behind the middle; 

 fourth antennal joint alone annulated 2 



Prothorax not spinose but with a feeble tubercle at each side, which is 

 sometimes almost wholly obsolete; antennae generally as in the 

 preceding 8 



2 The lateral spine well developed, very acute and projecting more or 

 less upward and backward; body larger 3 



The lateral spine very short, sometimes but little more than a tubercle, 

 though always distinguishable as a spine 7 



3 Annulus of the fourth antennal joint broad, extending from the base 

 to about the middle 4 



Annulus of the fourth joint short, not extending to the base 5 



4 Body more slender than usual and with much smaller and less de- 

 veloped anterior parts, shining; antennae gradually tapering, clothed 

 densely with gray decumbent pubescence and fully two-thirds as 

 long as the body; prothorax nearly as long as wide, not three-fifths 

 as wide as the elytra, distinctly constricted just behind the spine, 

 having widely scattered coarse and smaller punctures, which basally, 

 become very coarse and rather close; elytra not quite twice as long 

 as wide, moderately convex, the lateral line of flexure prominent 

 and rather acute; punctures coarse, few in number, arranged in very 

 irregular series, in basal third suturally, to the middle laterally, 

 the deflexed flanks with coarse sparse asperate punctures in nearly 

 basal half; abdomen shining, the minute decumbent hairs close 



