148 [December, 
14- articulate, the two last joints being connate. Ovipositor shorter 
than in Oynips, at least as long as the abdomen. Scutellum short, broad, 
and flattened above, not much overhanging or concealing the meta- 
thoracic declivity. Wings as in Gynips, but the radial cell shorter and 
broader. 
The genus is barely indicated in Hartig's " Uebersicht der Gat- 
tungen." I can find nothing structural, except the palpi, to warrant 
its separation from Gynips. 
Teras terminalis, Pab. 
Entirely testaceous, glabrous ; the abdomen more or less slightly 
fuscescent above. Eyes black. Ocelli red. Antennse after the fourth 
joint more or less fuscous. Tips of the tarsi fuscous. "Wings hyaline, 
with brown nervures ; the usual portions incrassated. Apterous speci- 
mens occur. (J $ . Long. | — 1| : alar. exp. 2 — 3| lin. 
G. terminalis, Eab. : Hart., in Germ. Zeits., 3, p. 193 ; 4, p. 407. 
The synonym G. ramuU, Lin., given by Hartig with a query, must 
be struck out, see p. 8 of this volume, and cf. Dahlbom, Onychia och 
Callaspidia, Tab. synopt. 2, sp. 45. The insect is well known, and its 
gall — the oak-apple — still better. From May to August the imago 
emerges in batches of 50 — 60 (each brood being of the same sex and 
size) from the oak-apple. Sometimes a very minute oak-apple will 
produce only one specimen. A curious account is given by Mr. Walker, 
in the Zoologist (vol. iv., p. 1457), of parasites and casual insect 
refugees* detected in a large mass of oak-apples collected at Southgate. 
The list includes most of the orders of insects ; the number of the 
Teras produced is estimated at 30,246, that of the interlopers at 24,417. 
fTo he continued.) 
A LIFE HISTORY OF GBAOILARIA STRINGELLA. 
BY CHAKLES HEALT. 
Towards the end of the first week of May the imago of this little 
garden pest generally makes its appearance, settling on, or flying over, 
the lilac, privet, and ash. About a fortnight later, on examining the 
under surface of the lilac, privet, and ash leaves, certain little whitish, 
somewhat iridescent, blotches or undulating streaks are perceptible.' 
On closely examining one of these blotches by the aid of a lens, somet 
little oval-shaped elevations, which at first sight look like so many 
bubbles, are observable, each of which, when placed under a microscope^ 
[* See, also, Mr. C. G. Barrett's note in our present No., p. 153.— Eds,.1 
