ASHMEAD : CLASSIFICATION OF THE CHALCID FLIES 461 



yellow. Wings hyaline, the veins brownish-yellow. The abdomen is long, conic- 

 ovate, a little longer than the head and thorax united, subcompressed, smooth and 

 shining, the petiole short, rugose, not or hardly longer than thick. 

 Brazil : Corumba, in May ; Santarem. Five specimens. 



ISO&OMODES NIGRICEPS, Sp. noV. 



(Plate XXXIII., Fig. 2.) 



Male. — Length 4.5 mm. Brownish-yellow, the head above, the abdominal 

 petiole, a spot at base of second dorsal abdominal segment, a spot at apex of the third 

 and fourth dorsal segments, all the following segments above, black ; eyes brown, the 

 ocelli red. The head has a deep frontal channel ; the antennae are long, filiform, in- 

 serted a little above the middle of tlie face, the scape reaching beyond the ocelli, 

 the pedicel of same being very short, the funicle joints long, about two thirds the 

 length of the scape, briefly pedicellate and with two whorls of long, black hairs as 

 in Isosoma. 



Brazil : Santarem. One specimen. 



Genus ISOSOMA Walker. 

 Isosoma orchidearum Westwood. 

 Isosoma orchidearum Westwood, Gardener's Chron., 1869, p. 330. — Westwood, Trans. 

 Ent. Soc. London, 1882, p. 323, 9 c^ ; PL 13, f. 1. c^, 4 9.— Fitch, Trans. 

 Ent. Soc. London, 1884, Proc, p. xi. — MacLachlan, Trans. Ent. Soc. London. 

 1884, Proc, p. xiv. — Riley, Insect Life, I., 1898, p. 121. — Riley, Insect Life, 

 II., 1890, pp. 250, 251.— Dalla Torre, Cat. Hym., V., 1898, p. 349. 

 Brazil : Living in buds of CaUleya sp. 

 This is probably not a true Isosoma. 



Tribe III. Eurytomini. 



Genus CHRYSEIDA Spinola. 

 Chryseida amazonica Westwood. 

 Chryseida amazonica Westwood, Thesaus. Ent. Oxon., 1874, p. 140; pi. 26, f. 5, 9. 

 —Dalla Torre, Cat. Hym., V., 1898, p. 352. 



Brazil. 



Chryseida cyanea (Fabricius). 



Chalcis cyanea Fabricius, Syst. Piez., 1804, p. 164, 9. 



Chryseida cyanea Ashmead, Froc. ^nt. Soc. Washington, III., 1895, p. 106, 9. — 

 Dalla Torre, Cat. Hym., V., 1898, p. 352. 

 Brazil : Chapada. A single female specimen taken in April. 



