THE GEOL'XD BEETLES. 1G7 



Geoup B. 



The species of this group art', as a riile, much smaller than those 

 of Group A. The males are without a puhescent space at tip of 

 middle tibia?, and the third joint of antennas is almost always equal 

 to or shorter than the fourth. 



KEY TO INDIAjN'A SPECIES OF GROUP B. 



((. Abdomen without tjuuctufes and glabrous; thorax as bmad at base as 

 elytra, sides not sinuate, basal iniyressiuns very feeble, surface dense- 

 ly punctured. 302. tomentosvs. 

 (1(1. Abdomen sparsely punctured and pubescent over the entire surface. 

 ';. Sides of thorax not sinuate ; prosternum not margined at tip. 



c. Legs black; thorax as wide at base as elytra, its disk with coarse 

 punctures very irregularly placed, 

 ri. Margin of thorax not thickened; bat<al line angulate at humerus; 

 puriJlish or violet blue above ; length 8.5-9.5 mm. 



303. PDEPUEICOLJUS. 



dd. Margin of thorax thickened near base ; humeri of elytra rounded ; 

 black above; length 11. .5-12. 5 mm. 304. Niger. 



cc. Legs reddish-yellow; thorax more finely and densely punctured, 

 narrower at apex than base and with a narrow red margin. 



oOo. IMPUNCTIFEONS. 



6b. Sides of thorax distinctly sinuate ; prosternum margined at tip, its 

 side pieces coarsely punctured. 

 c. Elytral intervals finely muricate ; i. e., witli numerous fine, rigid 

 points. 306. pejmnsylvaxicus. 



re. Elytral intervals finely and sparsely ])unetured, not muricate. 

 /. Head and thorax green, varying to blue, shining. 

 g. Labrum feebly emarginate ; elytra very obsoletely and s[)arsely 

 punctate. 307. beeviijvbeis. 



gg. Labrum truncate. 308. tricolor. 



ff. Head and thorax copjicry bronze ; thorax alutaceous, suboiiuque. 

 more finely and sparsely punctate. 309. nemokaUs. 



3U2 (1032). Chi^^nius tomentosts Say, Trans. Amer. Phil. Soc, II, 1823, 

 CO: ibid. II, 483. 

 Broadly oval, robust. Blackish, purplish or greenish and 

 feebly bronzed above ; antennae black, two basal joints pale, 

 the third joint longer than fourth; under surface and legs 

 black, shining. Head nearly smooth, a few wrinkles and 

 punctures above each eye. Thorax gradually broader from 

 apex to base, disk densely and coarSely punctured, with a 

 few irregular smooth spaces. Elytral striae shallow, punc- 

 tures round, rather coarse; intervals feebly convex, finely 



punctulate and pubescent. Length 13.5-15 mm. (Fig. 90.) 



^ Fig. 90. X IL 



Throughout the State ; common. March 23-Novem- mun^i, 

 ber 2(1. Often found at electric light and probably hibernate,' 

 The abdomen is sometimes sparsely punctured on the sides. 



