THE TRIBE CHALCIDINI BURKS 243 



8. Parapsidal furrows distinct, apex of mesoscutellum without pro- 



jections Ceratosmicra 



Parapsidal furrows obliterated, apex of mesoscutellum with two 



prominent, upturned projections Xanthomelanus 



9. Procoxae, from lateral aspect, longer than wide, metafemora with 



five or six long, slightly curved teeth (fig. 11, k) Metadontia 



Procoxae, from lateral aspect, as long as wide or wider than long, 

 metafemora usually with no long, curved teeth, sometimes with 

 three (fig. 12, Or-k) Spilochalcis 



The genus Xanthomelanus has not, so far, been found to have any 

 representatives in America north of Mexico, but it is quite likely 

 that some will eventually be found here. The genus has, therefore 

 been included. This generic key will probably not serve for the 

 segregation of Neotropical material, as I have made no intensive 

 effort to discover generic characters in the available extralimitaJ 



material. 



Genus CHALCIS Fabricius 



Chalcis Fabricius, Mantissa insectorum . . ., vol. 1, p. 272, 1787 (in part). — 

 HtJBKER, Der Naturforscher, vol. 24, p. 54, 1789. — Roemer, Genera insectorum, 

 p. 59, 1789.— Gmelin, Systema naturae, ed. 13, vol. 1, pt. 5, p. 2742, 1790.— 

 Olivier, Encyclopedie methodique, vol. 5, p. 437, 1790. — Rossi, Mantissa 

 insectorum, p. 126, 1792. — Panzer, Faunae insectorum German iae initia, vol. 

 22, p. 6, 1794. — Lamarck, Systeme des animaux sans vertebres, p. 266, 1801.— 

 Lateeiixe, Histoire naturelle . . . des insectes, vol. 3, p. 311, 1802. — Walcke- 

 NAER, Faune Parisienne, Insectes, vol. 2, p. 77, 1802. — Fabrtcius, Systema 

 piezatorum. p. 149, 1804. — Lateeille. Histoire naturelle . . . des insectes, 

 vol. 13, p. 219, 1805. — JuRiNE, Nouvelle methode de classer les hymenoptferes 

 et les dipteres, p. 312, 1807. — Latrellle, Genera crustaceorum et insectorum, 

 vol. 4, p. 25, 1809 ; Considerations generales . . . des insectes, pp. 303, 436, 

 1810. — Nees ab Esenbeck, Hymenopterorum ichneumonibus affinium mono- 

 graphiae . . ., vol. 2, p. 20, 1834. — Westwood. An introduction to the mod- 

 ern classification of insects, p. 65, 1840. — Dumkeil, M6m. Acad. Sci. Inst. 

 France, vol. 31, p. 957, 1860. — Packard, Guide to the study of insects . . ., p. 

 203, 1872.— Gahan and Fagan, U. S. Nat. Mus. BuU. 124, p. 31, 1923. (Geno- 

 type Sphex myrifex Sulzer [=^Chrysis sispes Fabricius].) 



Smiera Spinola, Ann. Mus. Hist. Nat., vol. 17, p. 147, 1811 (in part). — Curtis, 

 British entomology, vol. 3, p. 472, 1833.— Walker, Ent. Mag., vol. 2, p. 20, 

 1835. — Taschenberg, Die Hymenopteren Deutschlands . . ., p. Ill, 1866. 



Sniicra Spinola, Mag. Zool., vol. 7, p. 180, 1837 (in part). — Agassiz, Nomencla- 

 tor zoologicus, p. 30, 1846. — Forster, Hymenopterologische Studien, vol. 2, 

 p. 30, 1856. — Taschenberg, Die Hymenopteren Deutschlands . . ., p. 95, 

 1866. — Walker, Notes on Chalcidiae, p. 40, 1871. — Cresson, Trans. Amer. 

 Ent. Soc, vol. 4, p. 35, 1872. — Van Vollenhoven, Pinacographia, p. 47, 1880. — 

 Cameron, Biologia Centrali-Americana, Hymenoptera, vol. 1, p. 78, 1883. — 

 GiRAED, Traits fl^mentaire d'entomologie . . ., vol. 3, p. 37, 1885. 



Smiera Spinola (sensu strlcto), Thomson, Hymenoptera Scandinaviae, vol. 4, 

 p. 13, 1875. — Kirbt, Journ. Linn. Soc. London, Zool., vol. 17, p. 54, 1883. — 

 Howard, Ent. Amer., vol. 1, p. 215, 1885. — Peovanchee, Additions et correc- 

 tions k la faune hymenopterologique . . . Canada, p. 189, 1887. — Cresson, 

 Synopsis of the families and genera of the Hymenoptera of America north of 



