THE ENTOMOLOGIST. 
425 
light, and also off the rock faces out of little chinks and 
crevices, early in the morning, where they have packed 
themselves away, wherever the lichen-covered rocks approxi¬ 
mate in colour to themselves. In reply to the question so often 
put, how best to find this larva, there is no “royal road” to 
find it known to me, unless it be to “ work for it.” I have 
been on the rocks—sometimes having company, oftener alone 
—from 5 a.m. to 2 p.m. ; I have taken it in every one of the 
intervening hours. One journey I had most success early in 
the morning; on another occasion the best time was before 
noon, then best from 3 to 5 o’clock; another season the best 
time was after tea, dusk, then best after dark, or late at 
night: thus there is only one thing for it,—you must determine 
to work day after day, always hoping a family of it may come 
out to change skins, and when one is observed stick to the 
place until the others appear that day, that night, or the next 
day, for rest assured that after changing skins they must eat, 
and can then be seen, for where there are no stones to turn 
over, or for them to hide under, they get into the herbage, 
and cannot often be found there.— C. S. Gregson; Hose 
Bank, Fletcher Grove, Liverpool, June 10, 1873. 
Description of the Larva of Euchromia pur pur ana .— 
Length nearly half an inch. Colour dark olivaceous-green, 
changing to reddish brown. Head small, shining, black. 
Corslet covers 2nd segment; 3rd and 4th segments puffed 
out at the sides; light green; dorsal streak faint; subdorsal 
papillae raised, shining, one placed slightly below the other 
on each segment, below these marks and the lower one the 
space is wrinkled and sunk; anal segment armed with a 
light shield; feet horn-like, darker at the ends; a single 
spine springs from the spiracular region. It spins together 
the terminal leaves of Vaccinium Vitis-Idaca, and eats the 
inside surface of the leaves, making much black “frass;” it 
spins a white web amongst this debris, and changes to a 
pupa therein. It is full fed at the end of April, and remains 
in pupa about thirty days. I was accompanied on the moors 
by all the leading entomologists of the Ashton and Staly- 
bridge districts, to collect this and other Vaccinium larvae, 
which will be described in the ‘ Entomologist,’ and l here 
tender them my warmest thanks for their kindness, which has 
enabled me to make descriptions of more larvae than I could 
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