THE METALLIC WOOD-BORING BEETLES. 



77!) 



hl>. Mesosternal suture distinct; pores of antennae in small pits on the 

 under side of the joints ; size medium, rarely over 17 mm. 

 c. Prosternal spine obtusely rounded at apex. 

 (/. Mentum entirely horn-like; elytra without yellow markings. 

 e. Scutellum small, rounded ; tarsi broad, shorter than the tibiae. 



II. DlCERCA. 



ce. Scutellum much broader than long, truncate behind. 



III. PCECILONOTA. 



del. Mentum membranous in front; elytra usually marked with yel- 

 j IV. Buprestis. 



cc. Prosternal spine acute at apex; form very slender. V. Cinyba. 

 aa . Prosternal spine acutely angulated behind the coxa?, acute at tip; epi- 

 mera of metathorax partly covered by abdomen. 

 f. Clypeus not contracted by the insertion of the antennae; size small, 

 usually flattened. 

 g. Mentum leather-like in front ; base of thorax sinuate. 



VI. Melanophila. ■ 



gg. Mentum entirely horn-like. 



h. Base of thorax truncate; antennae serrate in both sexes. 



VII. Anthaxia. 



hh. Base of thorax sinuate; antennae pectinate in male, serrate in 

 female. Xenorhlpis. 

 ff. Clypeus contracted by the antenna? being inserted at the inner ex- 

 tremity of short oblique grooves ; size medium ; form rather broad 

 and flat. 



i. Third joint of tarsi truncate: hind tarsi with first joint elongate; 



scutellum large, acuminate. VIII. Chrysobothbis. 



PL Third joint of tarsi much prolonged at side ; hind tarsi with first 



and second joints equal ; scutellum small. IX. Actenodes. 



I. Chalcophora Sol. 1833. (Gi\, "copper .+ bearing.' 7 ) 



Here belong the largest of our Buprestids, having the antennas 

 inserted in small fovea?: mentum broadly emarginate in front; hind 

 tarsi with first joint elongated. The males have a distinct sixth 

 ventral segment. 



KEY TO INDIANA SPECIES OF CHALCOPHOEA. 



a. Margins of elytra entire or very finely serrate; median dorsal impres- 

 sion of thorax broad, more or less irregular. 

 J) Sutural stria of elytra on apical half only; color dull black, feebly 

 " bronzed. 14S0 - ™ixiexsis. 



m. Sutural stria of elytra entire ; coppery or brassy yellow. 



14S1. LIBERIA. 



aa. Margins of elytra strongly serrate on apical third; median impression 

 of thorax deep, narrow. 1482. campestris. 



