ASHMEAD : CLASSIFFCATION OK THE rHALCID 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 coxae, 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. 



Type— Cixi. No. 7317 U. S. N. M. 



Brazil : Bonito Prov. Bernarabuco (Mr. Albert Koel)ele). 



Spilochalcls bipunctata, sp. nov. 



FeiiuiJc. — 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- 

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

 The hind femora ai'e armed with ten or eleven small teeth. 



r^jH'.— Cat. No. 7318 U. S. N. M. 



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



XANTHOMELANUS Ashmead, gen. nov. 



In this genus the nietathorax is quadridentate posteriorly, two tcfth on each 

 side of the petiole ; the plate at apex of the scutellum is emarginate or l)identate, 

 while the hind femora are armed with several large teeth. 



XANTHOMELANUS DIMIDIATU8 (Fabricius). 



(Plate XXXI., Fig. 5.) 



Chalcis dimiJaia Fabricius, Syst. Piez., 1804, p. 160. — Dalla Torre, ('at. llym., V., 



1898, p. 387. 

 Conura dimidiata Sichel, Ann. Soc. ent. France (4), V., 18G5, pp. 300, 390, 9. 

 Sniicra dimidiata Cresson, Trans. Am. P^nt. Soc, IV., 1872, p. 5(5, 9. — Dalla Torre, 



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

 Siniera melanopteraWaiker, Journ. Entom., 1., 1861, p. 180, c?. — Dalla Torre, ("at. 



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

 Brazil: Venezuela; West Indies: Trinidad. 



MELAXOSMICRA Ashuicad, gen. nov. 



This genus in having the metathorax quadridentate agrees with Xanthumelanus 

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

 are long, the scape reaching beyond the ocelli ; while in its abdominal charactei-s it 

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

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



