396 FIWCEEDINGS OF THE NATIONAL MUSEUM. vol.xxii. 



67. PSEUDENCYRTUS Ashmead, nev/ genus. 

 (Type, Encyrius cecidomyiw Howard.) 



To tliis genus belong several species placed by writers in EiioyrUis 

 (sens. lat.). It is founded upon Uncyrtus cecidomyicc Howard, and to it 

 belongs also the European species Uncyrtus cla^^ellatus~D?^]mB,u. 



The species are strongly metallic and live parasitically in the Dip- 

 terous larva^ belonging to the family Cecidomyidse. 



The thorax is smooth, impunctate, or at most with a delicate, micro- 

 scopically reticulate punctuation; the stigmal vein is rather long, 

 oblique, and usually a little longer than the marginal and postmarginal 

 A^eius united; the axilhie do not quite meet at their inner basal angles; 

 the antenna? are moderately long, subclavate, the 3-jointed club not 

 much enlarged, only about half the length of the funicle or less, and 

 not much thicker than tbe terminal joint of the funicle; the funicle 

 0-jointed, subcylindrical, the joints all longer than wide, never monili- 

 form, while the abdomen in female, in outline, is conic-ovate, depressed 

 above and usually somewhat longer than the head and thorax united, 

 or at least as long, the ovipositor always slightly exserted. 



I. PSEUDENCYRTUS CECIDOMYI.^ Howard. 



Encyrtns cecidomyifs Howard, Bull. No. 5, U. S. Dept. Agric, Div. Eiit., 1885, p. 16, 

 ieniale and male.— Cresson, Syu. Hym. N. A., 1887, p. 239.— Dai.la Torre, 

 Cat.Hym.,V, 1898,p.256. 



Type.— Gat. No. 2639, U.S.N.M. 

 Hahitat. — Virginia; New York. 

 Host. — Dipt. : (Jecidomyia salicis-siliqua Walsh. 



2. PSEUDENCYRTUS NITIDUS Howard. 



Encyiiiis nitictus Howard, Journ. Linn. Soc. Lond. Zool., XXY, 1894, p. 94, 

 female.— Dalla Torre, Cat. Hym., V, 1898, p. 261. 



Tijpe.— Cat. No. 2722, U.S.N.M. ; also in British Museum. 



Habitat. — West Indies: St. Vincent. 



3. PSEUDENCYRTUS ROTUNDIFORMIS Howard. 



Encyrtns roiiivdiformis Howard, Jonrn. Linn. Soc. Lond. Zool., XXVI, 1896, p. 154, 

 female. — Dalla Torre, Cat. Hym., V, 1898, p. 263. 



Type.— Cat. No. 4852, U.S.N.M.; also in British Museum. 

 Habitat. — West Indies: Grenada. 



To this genus also probably belong the European species Microterys 

 barbarus Dalmau, and M. brevicornis Dalmau. 



68. EPIENCYRTUS Ashmead, new genus. 

 (Type, Encyrtns tliyreodoniis Ashmead.) 



This genus represents part of a group to which European writers 

 have applied the generic term Encyrtus Dalman. The types of the 

 genus are Encyrtus thyreodontis Ashmead and Enc. melanacis Dalmau. 



