34 GEO. H. HORN, 31. D. 



The punctuation of the thorax varies greatly, as will be seen by refer- 

 ence to the following: table, and as the general form is also quite diverse 

 I cannot realize that peculiar generic facies of which some authors have 

 written. 



In the accompanying table three series are indicated in place of two 

 defined by Candeze, the subordinate characters are suflBciently definite as 

 to require no special explanation. 



Claws simple Series A. 



Claws dentate from the middle to base Series B. 



Claws cleft at tip Series C 



Series A. 



Black, thorax bicolored, punctuation very coarse Tiilneratus. 



Uniformly brown or piceous, pubescence rather coarse, punctuation of thorax 

 mixed piillatus. 



Series B. 



Thorax not conspicuouslynarrower at apex than at base, sides usually strongly 



arcuate, disc at middle wider than the base 2. 



Thorax narrower at apex than at base, sides feebly arcuate, base as broad as 



disc at middle 7. 



2. — Sub-opaque, thorax coarsely and roughly punctured, the sides feebly arcuate. 



Body not coarctate at base of elytra deiisus. 



More or less shining, thorax with double punctuation. Body more or less 



coarctate at base of elytra 3. 



3. — Punctuation of thorax extremely fine, surface shining, scarcely at all pubes- 

 cent; color uniform i nanus. 



Punctuation of thorax very distinct, surface more or less pubescent 4. 



4. — Elytra paler at base or with a large humeral spot 5. 



Body above uniform in color 6. 



5. — General color brownish, elytra regularly oval in form, with basal fourth paler 



basalis. 

 Piceous, thorax paler at base and apex ; elytra gradually narrower to apex, 



each shoulder with an oval reddish spot traiisfuglis. 



6. — Punctuation of thorax close and conspicuous, the surface opaque, the coarse 

 punctuation nearly as abundant in the basal region as in front; general 



color ferruginous definitus. 



Punctuation of thorax not conspicuous, the coarse punctuation scarcely ex- 

 tending behind the middle; general color piceous snlHatus. 



7. — Castaneous to pale brown, form robust simplex. 



Piceous, elytra maculate, legs and antennae pale curiatns. 



Piceous, nearly black, form slender, legs and antennae pale yellow.. gracilis. 



Series C 



Elytral intervals sub-costiform near the tip. 



Brown or piceous, thorax one-fourth longer than wide, punctuation double. 



exoletus. 



