affeciiuf/ Carrots and Parsm])»: 
185 
spiracles black: head, thoracic plate, and pectoral feet decpblack; 
abdominal feet having the soles furnished with a ring of hooks : 
length 3^ lines. 
Depuessaria Daucella, the grey Carrot-blossom Ilat- 
body Moth. 
This is a third species of the same genus of Moths whose 
caterpillars consume the flowers and seeds of the carrots and 
parsnips in July and August, causing great damage and sometimes 
destroying the entire crop ; each caterpillar taking possession of 
an umbel of flowers, which It draws together In the centre by the 
fine threads that are spun from the mouth (fig. 17) ; in the 
midst of this resides the active wriggling caterpillar (fig. 18), 
which is at least half an inch long when full grown, of a greenish- 
grey colour inclining to yellow, with minute black warts, emitting 
short hairs scattered over the segments : there are also indistinct 
longitudinal streaks down the back ; the horny head and back of 
the first thoracic segment are brown or black. Some change to 
pupae amongst the web and stalks of the umbel, whilst others 
(the later broods probably) bore into the stems to undergo their 
metamorphoses. The pupa Is dull brown with pitchy limb- 
sheaths, very finely punctured (fig. 19). 
7. The Moth, named D. Daucella, after the carrot, is ashy- 
grey : the horns are like slender threads : the palpi or feelers are 
curved upward : the head and thorax are roddish-brown, freckled 
with black : the upper wings are also reddish-brown with white 
atoms scattered over them, and black interrupted lines forming 
streaks and dots along the nervures, especially towards the hinder 
margin ; the under-side of the upper wings Is dark ; the under 
wings are light-grey: it expands 10 or 1 1 lines.* 
This sjiecles does not appear to be frequent In England, but It 
has been observed on the chalky soil of Kent, in Devonshire, and 
different localities around London. 
There are several modes of arresting the mischief which all 
the caterpillars of these moths occasion. We have stated that 
the larvae are very sensitive and fall down by a thread when dis- 
turbed : if therefore the flower and seed-heads were shaken over 
a sieve, with a piece of paper at the bottom to prevent their 
escaping through the apertures, garden-crops at least might be 
freed from them. I expect also If powdered hellebore were 
dusted over the umbels, when the dew Is upon the plants, that It 
would compel the caterpillars to desert their quarters, and It 
would be worth while to try lime and soot also. 
* Tinea Apiella, Hiib.' Schmet. Tineae,' pi. 14, f. 94. Bouche, 'Nat. der 
Ins p. 124, 
