1180 FAMILY I, lit. CHKYSnMF.Un/E. 



l>1>. Mesosternum very short, nearly concealed by the close approach of 

 the pro- and metasterna ; form orbicular or hemispherical; antenna? 

 slender, but slightly thickened externally: cnlur piceons black, shin- 

 ing. SriI.Ki;OI>KKMA. 



LI. (EDIONYCHIS Lat. 1829. (Or., "swollen + joint.") 



A large genus of oval, small or medium-sized species having the 

 head inserted in the thorax to the eyes; thorax always much broader 

 than long, deeply emarginate in front, the margin more or less 

 dilated, base curved, usually obliquely sinuate near the hind angles; 

 elytra oval, Immeri not prominent ; prosternum moderately wide 

 between the front coxa?, the cavities open behind; side pieces of 

 metathorax rather wide, parallel and roughly punctured; legs short 

 and robust, front and middle tibia? slightly broader at apex, the 

 outer edge deeply grooved; hind femora very stout and thick, 

 deeply grooved beneath for the tibia 1 , which are short and feebly 

 grooved; tarsi with first joint oblong, triangular, second smaller and 

 narrower, last joint of hind pair globular; claws divaricate and 

 dilated at base. Males with the first, joint of front tarsus more 

 broadly dilated and last ventral segment with a deep sinuation each 

 side, the space between forming an oval lohe with a finely impressed 

 line at middle. Eleven species have been taken in the State, while 

 two others may occur. 



KEY TO INDIANA SPECIES OF (KOIOX YCIIIS. 



(i. 'Antenna* stouter, scarcely halt' the length of body; species larger ( 4.H 

 or mure nun.) and more convex; front of head oblique; elytral mar- 

 gins not flattened. 

 l>. Elytra wholly of one color. 



c. Elytra brilliant blue or green; thorax smooth; body beneath en- 

 tirely pale. 21SO. CIiaUTARSA. 



<<. Elytra dull blue or greenish-black; thorax more or less punctate; 



body beneath in great part dark. 



(L Punctures of elytra distinct, often coarse and dose; thorax bor- 

 dered with pale. L'isl. VIANS. 

 tlil. Punctures of elytra almost obsolete; thorax black. 



LMsi'. CONCINNA. 

 lilt. Elytra bicolored, either with a pale margin or with stripes on the 



disk, rarely dull reddish-yellow, with the suture black. 

 <. Elytra bluish, the margin pale; thorax and elytra coarsely and 

 closely punctate. l!is:!. THORACICA. 



<<. Elytra dull yellow, with or without black stripes. 



/. Elytra wholly dull yellow except a sutural black line. 



_MN4a. var. IIMBRIATA. 

 ff. Elytra yellow with dark stripes. 



