22 Coleopterological Notices, III. 



Head coarsely, deeply punctate, sparsely so behind ; eyes separated above by 

 three-fourths of their own width ; antennae (male) two-thirds as long as the 

 body, nearly as in imbricomis, 18-19 jointed. Prothorax more than twice as 

 wide as long, two-thirds wider than the head and three-fourths as wide as the 

 elytra ; base and apex equal, transverse, each feebly sinuate laterally ; sides 

 parallel, feebly dentate at base and apex and also just before the middle; 

 disk rather finely and sparsely punctate. Elytra twice as long as wide, 

 parallel, the sides feebly arcuate, obtusely rounded behind, narrowly dehis- 

 cent from basal third or fourth ; inner apical angle obtuse, with scarcely an 

 indication of the everted tooth of imbricomis ; disk coarsely, deeply, snbrugu- 

 losely punctate. Legs slender, posterior tarsi very slender, the under surface 

 densely pubescent only in two small spots at the apices of joints one to three. 

 Length 20.0-24.0 mm. ; width 8.0-9.5 mm. 



Indiana ; Missouri ; Kansas. 



Represented by a very homogeneous series of seven male speci- 

 mens from the Levette cabinet ; I have not seen the female. 



This species is allied to imbricomis, having nearly the same 

 antennal structure, but differs in its much smaller size, narrower, 

 more parallel and less convex form, less chitinized and paler elytra, 

 in the more widely separated eyes and in the vestiture of the hind 

 tarsi. In the normal forms of imbricomis — for there seems to be 

 at least one undescribed variety of this species before me — the eyes 

 are separated above by much less than one-half of their own width, 

 and the posterior tarsi are densely pubescent throughout joints one 

 to three, in a widely divided line except toward the base of the first 

 joint. The upper surface of the antennae is much more coarsely 

 and sparsely punctate throughout in debilis than in imbricomis, 

 this being one of the most striking and constant of the differential 

 characters. 



TETROPIUJfl Kirby. 



The species before me may be recognized as follows — the char- 

 acters throughout being taken from the female, except when other- 

 wise mentioned : — 



Elytra wider than the prothorax ; third antennal joint in the male much 

 longer than the second. 

 Third antennal joint (female) pyriform, unusually short, scarcely twice as 

 long as wide ; pronotum very sparsely punctate except laterally ; elytra 



generally pale cinnaniopterum 



Third antennal joint (female) much more elongate, always distinctly more 

 than twice as long as wide ; pronotum very densely punctate. 



