292 PKOCEEDINGS OF THE NATIONAL MUSEUM vol.88 



8. Metepisternum entirely glabrous, stigmal vein of forewing 



rounded at apex (fig. 10, h) delicata (p. 292) 



Metepisternum punctured, stigmal vein of forewing angled at 

 apex (fig. 10, k) 9 



9. Apex of antennal scape reaching only to level of posterior ocelli ; 



head, from dorsal aspect, one-half as long as wide — hirtifemora (p. 295) 

 Apex of antennal scape markedly exceeding level of posterior 

 ocelli; head, from dorsal aspect, much less than one-half as 

 long as wide 10 



10. Surfaces of mesopraescutum and scutum provided only with 



punctures femorata (p. 297) 



Surfaces of mesopraescutum and scutum provided both with 

 punctures and carinae, the carinae on mesopraescutum trans- 

 verse, those on lobes of mesoscutum directed obliquely ceph- 

 alad from posteromesal angles 11 



11. Pedicel of antenna triangular (fig. 9, u) mariae (p. 303) 



Pedicel of antenna cylindrical (fig. 9, t) 12 



12. Anterior mesal margin of antennal scape strongly incised (fig. 



8, s) igneoides (p. 301) 



Anterior mesal margin of antennal scape not incised (fig. 



9, a, 6) 13 



13. Antennal scape broadened only at apex, slightly excavated at 



apex (fig. 9, a) clora (p. 306) 



Antennal scape broad from near base to apex, deeply excavated 



at apex (fig. 9, 6) phais (p. 307) 



SPILOCHALCIS DELICATA (Cres«on) 



Figures 8, p; 10, h; 12, h; 13, b 



Smicra delicata Ceesson, Trans. Amer. Ent. Soc, vol. 4, pp. 38, 54, 192, 1872. — 

 HowAED, U. S. Dept. Agr. Bur. Ent. Bull. 5, p. 34, 1885. — Ceesson, Synopsis 

 of the families and genera of the Hymenoptera of America north of Mexico, 

 p. 233, 1887. — Dalla Toeee, Catalogus hymenopterorum, vol. 5, p. 375, 

 1898. — ScHMiEDEKNECHT, Genera insectorum, fasc. 97, p. 34, 1909. — Ceesson, 

 The Cresson types of Hymenoptera, p. 74, 1916. 



Smicra delicatula Cameron, Biologia Centrali-Americana, Hymenoptera, vol. 1, 

 p. 94, 1884. 



This small yellow species is most easily recognized by its very wide 

 interocular space, the shallow scrobe cavity, the broad, compact thorax 

 with the dorsal surface nearly glabrous, the rather long, slender 

 petiole, and slender metafemora with a large, acute inner tooth; the 

 apex of the antennal scape of the male markedly exceeds the level of 

 the posterior ocelli but only reaches this level in the female. 



Description. — Yellow, with vague, variable orange or light-brown 

 markings; occiput, broad mesal area of mesopraescutum, most of 

 lobes of mesoscutum, mesal angles of axillae, apex of mesoscutellum, 

 spot on mesopleuron, basal mark on outer dorsal surface of metacoxa, 

 and apical segment of posterior tarsus, usually orange or light brown ; 

 metafemoral teeth and, in some specimens, basal segments of gaster, 

 black. 



