Tiir: cRoiXT) BKirriJos. 71 



.•iIutMcodus. liiu'ly ni.UMsc ;ii base, the basal impressions broad, deep, bistri' 

 ate. Elytra aLiout (Uie-hair wider tiian tiiorax, tlie intervals less convex 

 than in coxendia;. Length 4.5-6.5 mm. 



Throughout the State ; frequent ; more so in the northern coun- 

 ties. INIay 1-Septcnibor 4. Tjisted as B. nitiduluni Dej., which 

 uanu' was preoccupied. Resembles coxendix, but easily separated 

 by the pah' legs and green punctures of elytra. 



Group B. 



In this group the dorsal punctures are on the third stria instead 

 of the interval and the humeri are either rounded or subangulate. 

 It includes the Indiana species of Groups V to X of Hayward. 



KEY TO INDIANA SPECIES OF GROUP B. 



II. Eiyhlli stria of the elytra moderately near but distinct from the margin. 

 h. Humeri of elytra subangulate; elytral striie entire. 



c. Elytra with the dorsal punctures large, round impressious; elytra 

 finely siriale. shining. SI. americanum. 



<c. Elytra with the dorsal punctures normal. 



<l. Form broad, dilated, depressed: hind angles of thorax obtuse; 



size larger, a.5-7.2 mm. dilatatum. 



(Id. Form more or less convex and more slender; hind angles of 



thorax subrectangular ; size smaller, 5.5-6.5 mm. 



c. Feebly convex ; thorax scarcely narrower at base than apex ; 



elytral strl;e moderately impressed. 82. honestum. 



ee. More convex; thorax more narrowed behind; elytral striie 



more deeply impressed, almost creuulately pnnctate. 



S3. CHALCEUM. 



I)h. Hnmeri of elytra rounded; robust, very convex; elytral strijB di- 

 lated, the first and second entire, the others abbreviated behind; 

 blackish-bronzed, the elytra often tinged with green. S4. nigrum. 

 (Id. Eighth stria of elytra indistinct from margin; hmneri rounded. 



/. Thorax trapezoidal, ^scarcely convex, the basal fovea with either one 

 stria or with two and the outer one very feeble; legs rufous or 

 dull yellow, the femora rarely darker. 

 (;. Basal impressions of thorax with the outer stria small but dis- 

 tinct ; size smaller, 4.8-6.2 mm. 

 /(. Elytra with five inner stri;c only entire; thorax one-half wider 

 than long. 85. guexi. 



///(. Elytra with six inner strijie entire; thorax more than one-half 

 wider than long; the elytra less wide as compared with the 

 thorax ; color nearly black, tinged with bronze. fuciax. 



(/(I. Basal impressions of the thorax with the outer stria obsolete; 

 elytra with six inner stria^ entire, their color variable, usually 

 dull yellow with darker transverse bands; size larger, 6-8.5 mm. 



transversale. 



