44 
MANGOLD. 
which, in garden cultivation, could be again got rid of without much 
trouble. 
The Aphis-feeding insects followed in the train of the Aphides on 
Turnips, as well as on other crops, for on Aug. 2nd a specimen was 
forwarded from the neighbourhood of Taunton, of a “ kind of crawling 
or running insect,” which had that day appeared in great numbers on 
Swedes, which proved to be the grey and orange (or yellow and scarlet) 
spotted grub of the Ladybird Beetle ; and on Sept. 3rd I was favoured, 
by Mrs. Marshall, of Poulton Priory, near Fairford, with a note of 
Ladybirds. 1, leaf with chrysalis ; 3, 4, grub (mag., with nat. size); 7, Coccinella 
bipunctata ; 8, C. dispar; 9, C. septempunctata. 
great numbers of Ladybird chrysalids having been observed in a field 
of Swedes. The chrysalids are black, with orange spots. 
Later in the year, on September 16th, specimens were sent from 
Edinburgh, of which an enormous proportion had been destroyed by 
Parasite Flies. The Aphidius rap a, Curtis, (nearly allied to the 
Aphidius arena, or Corn Aphis Ichneumon Fly, figured at p. 14) is one 
of the natural destroyers of Turnip Aphides. The Turnip Ichneumon 
lays an egg in one Aphis after another, and the maggots feed within, 
and thus destroy a large amount of the pests. 
Millepedes; “Thousand Legs”; False Wireworms; Julus 
Worms. Julidce ; Polydesmus. 
The amount of injury to field-crops which is caused by various 
kinds of Millepedes, or “ Thousand Legs,” commonly known as 
Julus Worms or False Wireworms, is year by year either increasing 
or becoming much more observed, and, as in this case we are dealing 
with pests which never acquire wings in any stage of their lives, 
something might quite certainly be done either to destroy them in 
infested land whilst it is empty of crop, or to prevent them being 
brought on to it in manure. What could be done to prevent them 
