4 MISC. PUBLICATION 4 7 0, IT. S. DEPT. OF AGRICTT/TCRE 



Description of the Tribe 



Front of head narrowed at the antennae, which are inserted on the front at 

 a considerable distance from the eyes, in rounded cavities in oblique depres- 

 sions. Antenna with third segment distinctly longer than fourth, the sensory 

 pores concentrated in foveae at external margin of segments. Mentmn corneous 

 at base, membranous at apex. Eyes oblique, strongly converging toward 

 occiput. Each elytron rounded or angulated at base, covering base of 

 pronotum, which thus seems lobed. Scutellum triangular, or elongate and 

 strongly acuminate at apex. Sternal cavity formed at bottom by metasternum, 

 and at sides by mesosternum ; metasternal epimeron partially covered by lateral 

 prolongations of abdomen. Prosternal process acutely angulated on each side 

 behind coxa, and also acute at apex. Mesosternum large, narrowly divided. 

 Posterior coxa broader internally ; anterior margin straight or sinuate ; posterior 

 margin oblique. Anterior femur toothed or unarmed. 



Key to the Genera 



Third segment of tarsus prolonged on each side into a long, divergent spine, 

 which extends beyond fourth segment Actenodes Dejean. p. 4. 



Third segment of tarsus truncate at apex, not extending beyond fourtii 

 segment Chnjso~bot1rris Eschscholtz, p. 17. 



Genus Actenodes Dejean 



Actenodes Dejean, 1S33, Cat. Coleopt, ed. 2, p. 80; 1836, ed. 3, p. 90; Lacordaire, 

 1857, Genera Coleopt., v. 4, pp. 72-73 ; LeConte, 1859, Amer. Phil. Soc. Trans, 

 (n. s.) 11: 240-241; Gemminger and Harold, 1869, Cat. Coleopt., v. 5, pp. 

 1420-1421; Quedenfeldt, 1886, Berlin. Ent. Ztschr. 30: 11-14; Kerremans, 

 1890, Soc. Ent. de Belg. Compt. Rend. 34 : cxxxiii-cxxxvii ; 1892, Soc. Ent. de 

 Belg. Mem. 1 : 200-203 ; 1903. in Wytsnian, Genera Insect., fasc. 12. pp. 193- 

 195 ; Schaeffer, 1904, N. Y. Ent. Soc. Jour. 12 : 209 ; Blatchley, 1910, Coleoptera 

 of Indiana, pp. 779, 792; Leng, 1920, Cat. Coleopt. North Amer., p. 1S3 ; 

 Fisher, 1925, U. S. Natl. Mus. Proc. 65 (9) : 83-91; Chamberlin, 1926, Cat. 

 Buprestidae North Amer., pp. 41-44; Obenberger, 1934, in Junk (pub.). 

 Coleopt. Cat., pt. 132, pp. 659-667. 



Clirysobotliris Castelnau and Gory, 1836-1837, Monog. Buprestides, v. 2, 59 pp., 

 illus. (part). 



Belionota Chevrolat (not Eschscholtz), 1833-1835, Coleopt. du Mex. (pages not 

 numbered) ; Motschulsky, 1859, Soc. Imp. Nat. Moscou Bui. 32 (2) : 

 184-185. 



DESCRIPTION OF THE GENUS 



Head vertical; front flat or slightly convex, sides strongly converging from 

 bottom to occiput; clypeus short, more or less emarginate or subtruncate in 

 front, frequently with a median tooth ; antennal cavities rather large. Antenna 

 rather short, variable, usually more or less serrate from fourth segment, the 

 serrate segments armed with poriferous foveae on their lower anterior margins, 

 sometimes also with obsolete foveae on upper surface. Eyes very large, 

 elliptical, much closer to each other on occiput than at bottom. Pronotum 

 much wider than long, not closely applied to elytra at posterior angles ; anterior 

 margin broadly, arcuately emarginate; sides variable; base sinuate, usually 

 with a more or less distinct median lobe. Scutellum small, triangular. Elytra 

 variable, scabrous or punctate, with or without costae, lobed at base, attenuate 

 posteriorly, sides serrate posteriorly. Sternal cavity formed by mesosternum 

 and metasternum ; mesosternum divided, lateral branches elongate and some- 

 what triangular; metasternum slightly emarginate or truncate in front. 

 Prosternum more or less convex on each side anteriorly; anterior margin 

 truncate or slightly sinuate; prosternal process flat, strongly constricted b? 

 coxal cavities, behind which it is abruptly expanded on each side into a sharp 

 tooth, and with a large, acute tooth at apex, which fits into the sternal cavity. 



