The dates of the appearance of the perfect insect are the 
end of May and beginning of June, and on to the 
beginning of July—June 5, June 11. 
The caterpillar is green minutely dotted with white, 
with seven or eight slanting white bars on each side, 
bordered above with darker green; the head has a yellow 
border; the tail is blue, tipped with dull green, or blackish. 
The date of the appearance of the caterpillar is from 
August to September. 
It feeds on the willow, the sallow, and the poplar, but 
will also eat the apple, the sloe, the peach, and the almond. 
SMERINTHUS POPULI. 
POPLAR HAWK-MOTH. 
Plate I. Figure 2. 
This insect measures from about three inches to rather 
over four. Male : front wings much indented on the out¬ 
side, grey, with a faint tinge sometimes of lilac, and clouded 
with pale brown; a broad bar of olive-green brown crosses 
the wings, with a light oblong mark in the middle of its 
upper portion, and beyond it, after a stripe of the ground 
colour, the outer margin is darker also, but divided half¬ 
way up by the grey. Hind wings somewhat indented, grey, 
dull red at the base, and with two narrow waved stripes 
of greyish brown between it and the outer margin. 
The female is generally paler than the male. 
Localities for the species, which is extensively dispersed 
throughout the country, are, among others, York, Ordsall, 
Huddersfield, Nafferton, Brighton, Cambridge, Exeter, 
Edinburgh, Lewes, Birkenhead, Durham, Weston-super- 
Mare, Llanelly, Manchester, Shrewsbury, Teignmouth, 
Preston, Darlington, Stowmarket, Wavendon, Plymouth, 
Oxford, Bristol, Blandford, Glasgow, Epping, Leicester, 
Scarborough, Kingsbury, Ramsgate, Tenterden, Halton, 
Truro, Barnstaple, Lower Guiting, Worthing, Lyndhurst, 
Winchester, Burton-on-Trent, Southport, Duddingston, 
