166 



FAMILY IT. CABABlDiE. 



298 (1001). CiniENius diffinis Chaud., Bull. Mosc, III, 1856, 279. 



Elongate-oval, robust. Bluish with a tinge of green; elytra darker; 

 antennas brown, three basal joints paler. Head coarsely punctured, smooth 

 at middle and in front. Thorax with base very little broader than apex, 

 sides moderately curved in front, slightly converging, not sinuate near base ; 

 disk moderately convex, densely and coarsely punctured. Elytral stria with 

 rather distant punctures ; intervals flat, rather densely punctulate. Length 

 13-15 mm. 



Throughout the State; frequent. April 11 -July 11. 



*299 (996). Chlj£NIUs sericeus Forst., Nov. Spec. Ins. Cent.. I. 1771, 58. 



Elongate-oval, rather slender, convex. Bright green, 

 sometimes with a bluish tinge; antennas usually pale, 

 often with the apical joints darker ; under surface black. 

 Thorax nearly quadrate, wider at base than apex, dense- 

 ly and rather coarsely and deeply punctate. Elytral stria? 

 tine, with rather fine, distant punctures; intervals flat, 

 densely and finely punctate. Length 13-17 mm. f Fig. 89. ) 



Throughout the State; common about the mar- 

 gins of ponds, lakes and streams. April 16-Deeem- 



ber 8. 



Fi g;89 . >< IS- 300 (1000). Chi^enius laticollis Say, Trans. Arner. Phil. 



(Original.) 



Soc. II. 1823. 64; ibid. II. 486. 

 Resembles diffinis very closely. Differs in having the antenna? and legs 

 uniform brownish-yellow. Thorax wider, feebly sinuate near the base, 

 which is distinctly wider than apex ; disk less densely punctured and more 

 convex. Length 13-15 mm. 



Lake and Starke counties; rare. April 8-May 28. The longer 

 side pieces of rnetasternum. broader thorax, short spine near base of 

 male femora and wholly pale antenna? easily distinguish it from 

 diffinis. 



C. fusicornis Dej.. antenna? brown, the two basal joints paler, 

 is recorded from the "Gulf States. Illinois and Missouri. 



*301 (994). Chl.=exius eeytheopus Germ.. Ins. Spec. Nov., 1824, 11. 



Elongate-oval, very robust. Piceous-black. the thorax with a tinge of 

 blue; legs and antenna? uniform brownish-yellow. Thorax slightly longer 

 than wide, base broader than apex; surface densely and rather coarsely 

 punctured. Elytral stria? fine, finely punctured ; intervals flat, rather dense- 

 ly punctulate. Front femora of male subangulate at base. Length 21- 

 23 mm. 



Throughout the State; common. January 1-September 22. 

 Taken in Vigo County in January and February, but more common 

 in colonies the first warm days of Mareii, 



