THE FAUNA OF THE NEIGHBOURHOOD OF PLYMOUTH. 283 
Apanteles vitnpennis. Bred 24th June from Ampliipyra pyra- 
mided larva, which produced eight specimens. 
perspicuus (Nees). A new British species. Bred 27th May 
from Leucania littoralis. 
brevicornis ( Wesm.). Bred 4th July from Toeniocampa miniosa. 
tetncus (Ehd.). A new British species. Bred 24th August 
from Satyrus janira. Fifty larvae of tetricus found food 
within the larva of janira. 
fraternus (Ehd.). A new British species. Bred 20th Sep- 
tember from Aspilates citraria. 
As fraternus is new to this country, it may be interesting to 
know something of its economy. In this instance 
twenty-seven were bred. The larvae emerge, almost 
spontaneously, from each side of their victim, and they at 
once commence making their cocoons, which are formed 
on the under side of whatever the larva of Citraria may 
be then resting upon. They are formed in a very orderly 
manner, taking into consideration that the whole twenty- 
seven work at the same time, and form a semi-pyramid 
of cocoons, and when finished the unfortunate larva seems 
to have a very great affection for them by covering them 
with its body, apparently to protect them. After the flies 
had escaped, I removed a thin slice, with a sharp knife, 
off one side of the cocoons, which enabled me to see how 
the fabric was constructed. The foundation cocoons con- 
sisted of eight; the next tier also contained eight; the 
others were above, but not in such regular order. Those 
in the centre were more or less five-sided, and in general 
appearance looked like a miniature piece of honeycomb. 
In length the group was 7 millimetres, and 2£ in height. 
Microplitis fumipennis (Etzb.). A new British species. Bred 
19 th June from Tamiocampa miniosa. One only in a 
less than half-grown larva. 
medianus (Ruthe). A new British species. Bred 30th June 
from Cerastis spadicea. 
mediator (Hal.) = dorsalis (Nees). Bred 30th June from 
Cerastis spadicea and Twniocampa stabilis. 
Earinus affinis. Plym Bridge, 5 th May. 
Zemiotes albiditarsus. Plym Bridge, 20th May. 
caligatus. Bred 23rd June from Evpithecia expallidata. 
