287 
CONTRIBUTIONS TO OUR KNOWLEDGE OF THE 
BRITISH BRACONIDA. No. 2.—MACROCENTRIDA, 
WITH DESCRIPTIONS OF TWO NEW SPECIES. 
ByiG. TL. Lyte PS. 
(Concluded from p. 262.) 
M. collaris (Spin.).*—Appears to be fairly common and 
generally distributed. Is easily distinguished from its near 
relatives by the second abcissa of the radius being much shorter 
than the first intercubital nervure. The terebra is the length of 
the abdomen. In eight females which I have examined I find 
the antenne to have 32-338 joints, and two males have each 87 
joints. 
I have not seen the original description, having identified 
my specimens from the writings of Wesmael and Marshall. 
Zee (Curtis). 
Large insects; in fact, Z. testaceator is probably our largest 
British braconid. Solitary parasites of the larve of Lepidoptera. 
The testaceous species bear a superficial resemblance to 
insects of the genera Ophion and Paniscus among the Ichneu- 
mons, and also to some of the Meteori; from the latter they 
may easily be distinguished by the sessile abdomen and by the 
neuration of the fore wings (see Entom. xlvii. 76, plate I. fig. 1). 
These parasites leave their hosts when the latter are full-fed, 
so that in all the instances recorded their cocoons have been 
found underground within the cocoons or pupal chambers of the 
hosts. 
When emerging from the cocoon the imago removes a cap 
from one end, but not so neatly as with the Meteori. 
(6) 1. Radial areolet of the hind wings not geminated 
by a transverse nervure. 
(5) 2. Large species expanding 17-22 mm. 
(4) 3. Wings hyaline or yellowish hyaline, terebra sur- 
passing the apexoftheabdomen 1. testaceator, Curtis. 
(3) 4. Wings somewhat clouded, terebra not surpassing 
the apex of the abdomen . 2. infumator, sp. nov. 
(2) 5. Smaller species expanding 12-14 mm. 
3. chloropthalma, Nees. 
(1) 6. Radial areolet of hind wings geminated 
(Homolobus, Forster). 
(8) 7. Colour rufo-testaceous . ; 4. geminator, nom. noy. 
(7) 8. Colour nigrescent . ; : 5. descolor, Wesm. 
Z. testaceator (Curtis).—Four records only can I find of the 
breeding of this species, and in every case from the larva of a 
Noctua. I have never bred or captured it myself, the only 
* Spinola, Ins, Lig. ii. p, 140. 
