Goleopterological Notices, VI I. 301 



bluish or violaceous in lustre, which character is never, as far as 

 known to me, observable in the species having 18 striae. 



Basal joint of the antennae large and stout ; vertex unevenly carinate and 



rugose., 



O; 



Basal joint more slender and moderate in length, though longer than the next 

 two together in cordatus; vertex smooth, becoming feebly and trans- 

 versely wrinkled or rugulose in some species 5- 



2 — Transverse nuchal constriction very deep and pronounced across the dorsal' 

 surface 3: 



Transverse constriction obsolete, the carina of the Aertex becoming feeble andl 

 irregularly rugose 4 



3 — Cephalic carina not dilated, the tubercle behind the interantennal depres- 

 sion single ; elytra with finer striae 1 ci'istatus 



Cephalic carina with a double tubercle. 



Basal joint of the antennae very large and conspicuous ; elytral sculpture 



moderately coarse 2 liasalis 



Basal joint less enlarged, nearly as in cristaius; elytral sculpture strong, 

 the striae deeply impressed and apparently more approximate. 



3 duplicatiis 



4 — Prothorax moderately narrowed behind, the sides sinuate ; basal angles 

 rectangular 4 rugiceps 



Prothorax very strongly, obliquely narrowed behind and feebly sinuate near 

 the base, the basal angles more than right 5 incipiens 



5 — Anterior tarsi of the male with the two basal joints spongy-pubescent or 

 papillose beneath, the third and fourth simply spinulose ; elytra 18-stri- 

 ate, but with the sculpture usually much confused toward the sides, the 

 margins never violaceous 6 



Anterior tarsi of the male with the first three joints densely pubescent or papil- 

 lose beneath, the fourth also having occasionally a few papillae [fide 

 Horn], but generally having merely a brush of long subspiniform setae.. 9 



6 — Elytra shining, the punctures moderate in size and not much wider than 

 the striae, the latter generally fitne 7 



Elytra dull or opaque, the punctures much coarser than the striae 8 



'Y — Larger, 17-22 mm. in length, the elytra oval and much elongated ; protho- 

 rax relatively large, much dilated anteriorly and unusually broad at 

 base 6 stria topunctatiis 



Similar to the preceding in size, the elytra less elongate and more broadly ob- 

 long-oval, fuller at the humeri ; prothorax much narrower, as long as 

 wide ...7 oralis 



Smaller, 16-18 mm. in length, the prothorax relatively much smaller and 

 shorter, much wider than long, the elytra less elongate-oval. 



8 decipiens 

 8 — Prothorax longer than wide, feebly sinuate behind, the basal angles sub- 

 rectangular ; elytral striae very fine, with deep and coarse punctures. 



9 punctatus 



Prothorax as wide as long. 



