6 PKOCEEDINGS OF THE NATIONAL MUSEUM vol.65 



14. Eyes ublit{ue and distiuctly converging above 15. 



Eyes parallel or only feebly converging above 17. 



15. First joint of posterior tarsi longer than the second 16. 



First joint of posterior tarsi not longer than the second. 



Dicerca Eschscholtz. 



16. Pronotum wider in front than behind ; body subcylindrical. 



Paracinyra Fisher. 

 Pronotum narrower in front than behind ; body not subcylindrical. 



Cinyra Castelnau and Gory. 



17. Pronotum with three more or less deep depressions at the base 18. 



Pronotum without three depressions at base, sometimes longitudinally sul- 



cate at the middle Buprestis Linnaeus 



18. Pronotum wider in front than behind Mixoclilorus Waterhouse, 



Pronotum narrower in front than behind Peronaemis Waterhouse. 



19. Antennal cavities concealed by a transversely oblique carina. 



Aglaostola Thomson. 

 Antennal cavities small, rounded, and not concealed by a carina 20. 



20. Pronotum distinctly sinuate at base 21. 



Pronotum truncate or only feebly sinuate at base Anthaxia Eschscholtz. 



21. Elytra long, covering the abdomen Melanophila Eschscholtz. 



Elytra short, not covering the abdomen Tetragonoschenia Thomson. 



22. Sternal cavity formed almost entirely by the metasternum ; base of pro- 



notum more or less sinuate (tribe Agrilini) 23. 



Sternal cavity formed entirely by the metasternum ; base of pronotum trun- 

 cate (tribe Mastogenini) 28. 



23. Middle coxae more widely separated than the anterior ones 24. 



Middle coxae not more widely separated than the anterior ones 27. 



24. Antennae lodged in a distinct deep groove in the prosternum 25. 



Antennae free in repose, not lodged in a groove in the prosternum. 



Trachys Fabricius, 



25. Prosternal process deeply longitudinally grooved ; legs lodged in depres- 



sions beneath Brachys Solier. 



Prosternal process not longitudinally grooved; legs free 26. 



26. Prosternal process strongly constricted by the anterior coxal eavities; ag- 



riliform Taphrocerus Solier. 



Prosternal process not constricted by the anterior coxal cavities; form ob- 

 long or oval Leiopleura H. DeyroUe. 



27. Femora serrate on inner margin Paradomorphus Waterhouse. 



Femora not serrate on inner margin Agrilus Curtis. 



28. Eyes parallel Micrasta Kerremans. 



Eyes feebly oblique, slightly converging behind Mastogenius Solier. 



Genus POLYCESTA Solier 



Polycesta Solieb, Ann, Soc. Ent. France, ser. 1, vol. 2, 1833, pp. 281-282, pi. 

 11, fig. 11. — Castelnau and Gory, Mon. Bupr., vol. 2, 1837, pp. 1-6, 

 pi. 1. — L-\coi!DAiBE, Gen. Col., vol. 4, 1857, pp. 62-63.— Kerremans, 

 Wytsnian's Gen. Insectorum, fasc. 12, pt. 1. 1902, pp. 25-26 ; Mon. Bupr., 

 vol. 1, lIHKi, pp. 469-522, pis. 9-10. 



Nemaphorus Solier. Gay's Hist. Nat. Chile, Zool., vol. 4, 1851, pp. 490-491. 



Head flat ; epistoma very short, and sinuate or truncate in front ; 

 antennal cavities small, rounded, entirely closed in front, and sur- 



