1180 FAMILY LTTL— CHRVSOMKTJD.T;. 



hi). Mesostcnuiiii very sliort. ucni-ly coiiccnlcd liy the (hisc apiirKacli ol' 

 the prci- and iiiftastcnia : Uwm (.rhiciilai- (U- lieiiiisiilicrical ; antonii;i' 

 slender, hut slightly thickened externally, coldr piceons lilack. shin- 

 ing. Sl'II.EliODKUMA. 



LI. (EoioNYCiiis Lat. lS2f). ((i!i-., "swollen ; joint.") 



A large genus of oval, small uv iiiedinni-sized species having the 

 head inserted in the thoi-ax to the eyes; thorax always tnneh hroader 

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

 dilated, hase enrved, usually ohliquely sinuate near the hind angles; 

 elytra oval, humei'i not pi'ominent; prosteruum moderately wide 

 between the front coxa', the cavities 0])en behind; side pieces of 

 metathorax rather wide, parallel and roughly punctured; legs short 

 and robust, front and middle til)ia' slightly broader at apex, the 

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

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

 grooved; tarsi witli 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 

 bi'oadly dilated and last ventral segment with a deep sinuation each 

 side, the space between foi-ming an oval lobe with a finely impressed 

 line at middle. Eleven sjx i-ies haxc been taK'eii in tlie State, while 

 two others may occur. 



KF.Y TO INDIANA SPECIKS OK (KI)ION YCIIIS. 



(/. Anteiuia' stouter, scarcely hall" the leni,dh nf body: siiecit-s larixer (4.r) 

 or more nnn.) and more convex: ti-dnl ol" head (ilili(ine; elytral mar- 

 gins not tliittened. 

 h. Elytra wholly of one c(.l(ii-. 



a. Elytra brilliant blue or gi-een ; Ihoi-ax smooth; body beneath en- 

 tirely i)ale. 121S0. (uiiiiiTAHSA. 

 re. Elytra dull blue oi- greenish-black; thorax more oi- less imnctatc; 

 body beneath in great part dark. 

 (/. Punctures of elytra dislinct, often coarse and close; thorax bor- 

 dered with pale. iMSl. vians. 

 (1(1. Punctures of elytra almost obsolete; lliorax black. 



HI SI*. rONCINNA. 



1)1). Elytra liicolored. either with a iiale margin oi' with strijies on the 

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

 e. ]>:iyti-a bluish, the margin jiale; tlior;i\ and elytr;i coarsely and 

 closely jinnctate. iMs:;. tiioracica. 



ce. Elytra dull yellow, with or without black siriiies. 



/. lOlytr.a wholly dull yellow except a sulural black line. 



lIlS4a. var. fimbriata. 

 /'/". Elytra yellow with dark stripes. 



