658 
Journal of Agricultural Research 
Vol. XXX, No. 7 
DISPERSION 
Studies of dispersion of Schedius 
have continued over several years. 
The method used was to take the point 
of liberation of a colony as a center 
and run out lines from this center in 
the four cardinal directions. Along 
these lines at points equally distant 
from the center and consecutively 
from each other, collections of 10 or 
more gipsy-moth egg clusters were 
made. A study of the notes-made from 
the examination of these eggs gave 
records of dispersion of 300 to 400 
yards for the adults of a single genera¬ 
tion, or a seasonal spread of over 
one-half mile. Dispersion records ob¬ 
tained late during the second fall after 
colonization have shown a spread of 
nearly 2 miles for the two seasons. 
Female Schedius are able to fly, and 
the wind may carry the adults con¬ 
siderable distances. 
EARLY METHOD OF OBTAINING 
ANASTATUS BIFASCIATUS FROM 
IMPORTED GIPSY-MOTH EGGS 
FOR COLONIZATION 
Anastatus adults were first reared at 
Melrose in the spring of 1908 from 
gipsy-moth eggs which were received 
from Japan and Russia during the win¬ 
ter of 1907 and 1908. This material 
was kept in a warm room, which has¬ 
tened the issuance of the parasites. 
As the Anastatus began to emerge, 
they were placed with gipsy-moth eggs 
which had been kept in cold storage 
since the previous fall in an endeavor 
to retard the larval development. No 
reproduction occurred from this experi¬ 
ment, and the imported eggs contain¬ 
ing the Anastatus were placed in cold 
storage to retard the issuance of the 
parasites until new gipsy-moth eggs 
were available. In July the imported 
material was removed from cold stor¬ 
age and 513 adult Anastatus issued and 
were liberated. During the fall of 1908 
and the spring of 1909 large shipments 
of gipsy-moth egg masses were received 
from several European countries and 
from Japan. The largest quantity of 
the European material came from Hun¬ 
gary. The nonparasitized eggs were 
allowed to hatch and the remaining 
parasitized eggs were divided into equal 
lots for colonization. About 5,000 par¬ 
asitized eggs were separated from the 
Japanese eggs and were added to the 
European colonization material. 
DESCRIPTION AND LIFE HISTORY 
OF ANASTATUS BIFASCIATUS 
FONSCOLOMBE 
Anastatus bifasciatus is now quite 
abundant in New England, and is often 
reared from eggs of the gipsy moth. It 
has previously been known as Cynips 
bifasciata Fonscolombe, Eupelmus bifas¬ 
ciatus Foerster, and Eupelmus bifascia¬ 
tus Wachtl. 
The early descriptions of this species 
are rather brief, and are obtainable in 
only a few libraries. A description, 
therefore, seems desirable at this time. 
REDESCRIPTION (BY C. F. MUESEBECK, 
OF THE GIPSY MOTH LABORATORY) 
Female (fig. 6, a ).—(Length 2.2 to 3 mm. Head 
transverse, more than twice as broad as thick an- 
teroposteriorly, the eyes strongly divergent below; 
vertex finely transversely sculptured posteriorly, 
minutely punctato-reticulate anteriorly; frons most¬ 
ly smooth and shining along the eye margins, 
scrobes strongly transversely sculptured; malar 
space nearly half as long as the eye. mostly punc- 
tato-rugulose, sometimes weakly so; malar groove 
distinct; ocellocular line about equal to the diam¬ 
eter of an ocellus; antennae inserted on a line with 
the lower extremities of the eyes or very slightly 
below; scape extending to the vertex; pedicel at 
least two-thirds as long as the first funicular seg¬ 
ment; funicular segments becoming gradually short¬ 
er and broader, the sixth and seventh not distinctly 
as long as broad; club three-segmented, very nearly 
as long as the three last funicular segments com¬ 
bined; median lobe of mesoscutum completely 
strongly punctate, the lateral lobes very faintly 
lineolated or reticulate, and strongly shining; scu- 
tellum and axillae sculptured exactly like median 
lobe of mesoscutum; mesopleura finely lineolated, 
shining; propodeum polished; abdomen a little 
shorter than the thorax, broadening gradually from 
base to apex where it is broadly rounded, perfectly 
smooth at base, finely transversely lineolated pos¬ 
teriorly; ovipositor sheaths protruding very slight¬ 
ly beyond apex of abdomen. Head green, with 
purplish reflections; scape yellow; pedicel and flagel¬ 
lum bronzy-black; mesoscutum dark greenish 
bronze on the lateral lobes, purplish blue behind 
the median lobe which is a brilliant golden bronze; 
scutellum and axillae like the median lobe of mesos¬ 
cutum except that they are tinged with green; pro¬ 
podeum purplish laterally; mesopleura brownish 
yellow, darker anteriorly; legs dark brown; wings 
hyaline with a small faintly fuscous spot at extreme 
base, and with two broad fuscous bands separated 
by a complete transverse curved hyaline band 
which arises directly before the stigmal vein; apex 
of wing hyaline; abdomen mostly greenish black 
with a large yellowish spot on first tergite. 
M.vle—L ength 1.8 to 2 mm. Head transverse, 
much more than twice as broad as thick antero- 
posteriorly; eyes very faintly and sparsely hairy; 
ocellocular line hardly as long as diameter of an 
ocellus; vertex and frons closely shallowly punc¬ 
tate; lower part of face confluently punctate, 
weakly so toward the malar furrows; cheeks faintly 
longitudinally sculptured; malar space more than 
half the eye height; antennae inserted about on a 
level with the lower eye margins; scape short, 
broad, slightly concave outwardly, and scarcely 
attaining vertex; pedicel very short, about one-third 
the first funicular segment; flagellum long, of 
uniform thickness; first segment of funicle twice as 
long as thick, longer than the second; second and 
third subequal, fourth, fifth, sixth, and seventh 
