THE GBOT'XD BEETLES. 71 



:ilntiiceous, liuely iiijjcjse .-it hasc. tlie liiisal impressicjiis broad, deeji. bistri- 

 iite. Elytra about one-half wider than thorax, the intervals less coiive.v 

 than in coj-ciicl'i.r. Length 4.5-6.5 mm. 



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

 lies. May 1-Septeniber 4. Listed as B. nitidulum Dej., which 

 name wa.s preoccupied. liesembles coxoidix, but easily separated 

 })y the pale lejis and green punctures of elytra. 



Gkoup 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 inchides the Indiana species of (iroups V to X of Hayward. 



KEY TO l.Nl-IIANA SPECIES OF GROUP B. 



«. Eighth stria of the elytra moderately near but distinct from the margin. 

 Ii. Humeri of elytra subangulate ; elytral strife entire. 



c. Elytra ^vith the dorsal punctures large, round impressions; elytra 

 finely striate, shining. 81. ameeicanum'. 



re. i']l.vtra with the dorsal punctures normal. 



0. Form liroad, dilated, depressed; hind angles of thorax obtuse; 



size larger, (1.5-7.2 mm. dilatatum. 



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



thorax subrectangular ; size smaller, 5.5-U.5 mm. 



c. Feebly convex; thorax si'arcely narrower at base than apex; 



elytral stria' moderately- impressed. 82. honestum. 



ee. llore convex ; thorax more narrowed behind ; elytral striae 



more deeply impressed, almost crenulately punctate. 



83. chaloeum. 

 bh. Humeri of elytra rounded; robust, very convex; elytral strise di- 

 lated, the flr'^t and second entire, the others abbreviated behind; 

 blacliish-bronzed, the elytra often tinged \^•ith green. S4. nigkom. 

 (III. Eighth stria of elytra indistinct from margin; humeri rounded. 



f. 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 r.arely darker. 

 !/. Basal impressions of thorax with the outer stria small but dis- 

 tinct; size smaller, 4.8-6.2 mm. 

 /(. Elytra with tive inner stria^ only entire; thorax one-half wider 

 th.-m long. 85. gjjexi. 



Iih. Elytra with six inner stria- entire; thorax more than one-half 

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

 thor.nx ; color ne.-irly black, tinged with bronze. fugax. 



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

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

 dull yellow with darkei- transverse bands ; size larger, 6-S.5 mm. 



TBANSVEESALE. 



