THE METALLIC WijOD-BORIl^G BEETLES. 791 



broadly but not deeply triangularly notched at middle. Thorax twice as 

 wide as long, narrowed at apex and base, sides regularly curved ; disk with 

 a vague median densely punctured sulcus, wider in front, limited on each 

 side by an elevated smooth space, between which and .margin the surface 

 is irregularly and densely punctate. Elytra wider than thorax, gradually 

 narrowed from middle to apex ; margins feebly serrate, tips obtuse ; first 

 costa distinct on apical half, the others replaced by broad smooth spaces 

 of irregular sliape. the surface lietween tliem densely punctate. Body be- 

 neath very shining, the last ventral with submarginal seiTate ridge. Length 

 10-16 mm. 



Lake and Knox ccmnties; scarce. June 6-July 28. Occnrs on 

 siTub pine in the former county. Kauges from 3Iassaelmsetts to 

 Lake Superior. 



C. triiicrvia Kirby, piceous, bronzed, elytra and abdomen more 

 or less cupreous, length 9-14 mm., is said to occur from the iliddle 

 States westward; C. pusilla Lap., dark coppery-bronze, length 5.5- 

 7 mm., occurs from ilassachusetts to Wisconsin and has been taken 

 near Cincinnati. 



1503 (4657). Chkysobothei.s sex-signata Say, Trans. Amer. Phil. Soc, 



VI, 1836, 158 ; ibid. II, 103, 591. 

 Elongate-oblong, subdepressed. Piceous with faint 

 bronzed lustre; elytra each with three rounded brassy 

 spots, one basal, one in front of middle on second 

 costa, the other one-third from apex ; beneath bright 

 green, the sides cupreous ; antennae green in bfjtli sexes. 

 the third joint as long as the next three. Clyiieus tri- 

 angularly emarginate at middle, curved on each side. 

 Thorax twice as wide as long, abruptly narrowed in 

 front, sides slightly curved, hind angles obtuse; disk 

 with a vague median impression on basal half and a 

 subapieal oblique one each side, coarsely and densely ^. „„ ,., „ , ,. 



Fig. 306. (After Packard m 



punctured, transversely strigose. Elytra wider than Fifth Rep. u. S. Ent. Comm.) 

 thorax, sides nearly parallel in front, obliquely nar- 

 rowed behind the middle; surface with first costa nearly entire, the others 

 represented by faintly elevated smooth lines, coarsely and closely punctate. 

 Presternum not lobed in front. Length 6.5-11 mm. (Fig. 306.) 



Marshall, Putnam. Perry, Vigo and Knox counties; scarce. 'Slny 

 21-July 25. A handsome and easily recoanized species. 



1504 (4660). Chbysobothkis azueea Lee, Trans. Amer. Phil. Soc, XI. 



1859, 239. 

 Oblong, rather broad, subdepressed. Color variable from blue to green- 

 ish-blue, violet or cupreous ; beneath blue, the sides sometimes cupreous ; 

 antennas greenish, male, bronze, female, the third joint nearly as long as 

 the next three. Clypeus broadly, not deeply, triangularly emarginate at 

 middle. Thorax twice as wide as long, without well marked depressions ; 



