18 
fectly circular; pronotal spots moderately large and often faimt, but 
plainly discernible from above, sometimes, however, quite bright and 
distinct. Abdomen longer than thorax, nearly as long as head and 
thorax together; abdominal segments 4 and 5 together longer than 
2; 3 only about half as long as 4, and 5 as long as two preceding 
united; first funicle joint one-half. longer than second; club longer 
than three preceding funicle joints together. Body slightly but plainly 
pilose except at sides of metanotum, where the fimbria is very obvious. 
Legs black except at joints, which with the tarsi are yellow. Claw of 
stigmal club given off before the tip. 
Male.—Length, 2.9 nm.; expanse, 6mm. “Petiole shorter than hind 
cox, faintly punctate; flagellum of antenne uniformly pilose, joints 
well rounded above, not strongly pedicellate; joint 1 three times as long 
as wide and nearly three times as long as pedicel; none of the funicle 
joints constricted in the middle; joints 2 and 3 each nearly as long as 
1; joints 4and 5each a little shorter; club plainly divided by a distinct 
incision into two joints, but the terminal ovate joint is not pedicellate. 
Redeseribed from inany male and female specimens reared in Decem- 
ber and January, 1885, from wheat stalks collected in Louisa County, 
Va.; from other specimens received from A. J. Cook, Lansing, Mich.; 
from others reared by J. H. Comstock, at Ithaca, N. Y., from straw col- 
lected in the immediate vicinity; from other specimens received from 
J. A. Lintner, Albany, N. Y.; from specimens from the Asa Fitch col- 
lection, labeled ‘+ Hurytoma tritict Fitch, Maryland, E. L. Rogers;” from 
specimens collected on grass at Lafayette, Ind., by F. M. Webster; 
from specimens received from S. O. Diom, Grantsville, N. C.; from 
many specimens reared from Elymus americanus by Albert Koebele, in 
Los Angeles, Cal., and from many more specimens reared by the same 
gentleman from a grass which was supposed by Mr. Koebele to be 
either Bromus ciliatus or a species of Agropyrum, in the Santa Cruz 
Mountains, California. 
Isosoma hordei Harris. 
Tchneumon hordei Harris, New England Farmer, July 23, 1830, vol. rx, p. 2. 
Burytoma fulvipes Fitch, Seventh Rept. Ins. N.Y. (sep. ed.), 1862, p. 154. 
Isosoma hordei (var.), Walsh, Amer. Entom., Oct., 1870, vol. 11, p. 330. 
The writer is able to positively assert that Harris’s I. hordei is iden- 
tical with Fitch’s I. fulvipes. Fitch’s types are in the possession of the 
United States National Museum, and through the kindness of Mr. Sam- 
uel Henshaw, of the Boston Society of Natural History, I have been 
able to critically examine Harris’s types, consisting of 2 males and 2 
females, fragmentary it is true, but perfectly recognizable. The spec- 
imens are labeled “281,” and the record, as I am informed by Mr. Hen- 
shaw, reads “281 Hurytoma hordei H, N. EK. Farmer, Insect (parasitic?) 
in Barley, June 15, 1830.” 
Female.—Length, 3.6 mm; expanse,6mm. Pronotum and mesonotum 
minutely but strongly rugulose, smoother than J. tritici; metanotuin 
