ASHMEAD : CLASSIFICATION OF THE CHALCID FLIES 447 



tudinal line down the center of the scutellum, a hne in the mesopleural furrow, and 

 a spot on the outer face of hind coxse, near the middle, black. 



The abdomen is conic-ovate, the dorsal segments narrowly banded with brown 

 at base, the petiole hardly more than twice longer than thick. The hind femora 

 are armed with about fourteen minute black teeth. 



r^/pe.—Cat. No. 7317 U. S. N. M. 



Brazil : Bonito Pro v. Pernambuco (Mr. Albert Koebele). 



Spilochalcis bipunctata, sp. nov. 



Female. — Length 5.5 mm. Yellow ; immaculate, except two black spots on the 

 mesothorax (a spot on each lateral lobe) and two spots on the hind femora ; flagel- 

 lum brown. The abdomen is subglobose, the petiole short, hardly as long as wide. 

 The hind femora are armed with ten or eleven small teeth. 



y^pe._Cat. No. 7318 U. S. N. M. 



Brazil : Bonito Prov. Pernambuco (Mr. Albert Koebele). 



XANTHOMELANUS Ashmead, gen. nov. 

 In this genus the metathorax is quadridentate posteriorly, two teeth on each 

 side of the petiole ; the plate at apex of the scutellum is emarginate or bidentate, 

 while the hind femora are armed with several large teeth. 



XANTHOMELANUS DiMiDiATUS (Fabricius). 

 (Plate XXXI., Fig. 5.) 



Chalcis dimidata Fabricius, Syst. Piez., 1804, p. 160. — Dalla Torre, Cat. Hym., V., 



1898, p. 387. 

 Conura dimidiata Sichel, Ann. Soc. ent. France (4), V., 1865, pp. 360, 390, 9. 

 Smicra dimidiata Cresson, Trans. Am. Ent. Soc, IV., 1872, p. 56, 9. — Dalla Torre, 



Cat. Hym., V., 1898, p. 376. 

 Sviiera melanopter a Wa\ker, Journ. Entom., I., 18'61, p. 180, d^. — Dalla Torre, Cat. 



Hym., v., 1898, p. 379. 

 Brazil : Venezuela ; West Indies : Trinidad. 



MELANOSMICRA Ashmead, gen. nov. 



This genus in having the metathorax quadridentate agrees with Xanthomelanus 

 but otherwise it is quite distinct. The scutellum is normal, unarmed ; the antennse 

 are long, the scape reaching beyond the ocelli ; while in its abdominal characters it 

 shows some affinity with Ceratosmicra, only the petiole is not so long as in typical 

 species. The black color of the head and thorax is characteristic. 



