60 THE ENTOMOLOGIST. 
confined area of a tumbler, especially as its resting attitude, its 
shape, and the longitudinal lines along its body all serve to 
render it less conspicuous. It rests almost invariably with its 
body fully extended and closely pressed to the edge of a grass- 
blade. The body of the larva tapers at both extremities, thus 
forming a curve which reaches its highest point about the 
middle segments, so that when the larva assumes its resting 
attitude on a grass-stem there is no abrupt break to catch the 
eye in the outline of the blade of grass beyond a gentle swelling 
where the larva is resting. The larva feeds during the day, and 
occasionally I have seen it feeding by night, but my observations 
were not close enough to enable me to state with any certainty 
whether it is an habitual night-feeder. When feeding, the larva 
clasps the edge of a grass-blade and eats into the blade, working 
downwards, and seldom eating beyond the midrib ; but occasion- 
ally the blade of grass is eaten right through. Mr. Tonge’s 
excellent photo. of the larva admirably illustrates the attitude it 
adopts when feeding ; this photo. was taken in September, and 
shows the hibernating size of the larva, for none (except the four 
that pupated) moulted again after mid-August. I cannot 
remember the exact date of the last moult before hibernation, 
but certainly it was not later than this. The point that struck 
me most with regard to the habits of the larve was their extreme 
lethargy. All their movements were performed with the utmost 
deliberation. It was very seldom I observed one on the move, 
either by day or by night, and when they did move the process of 
travelling appeared most laborious and painfully slow. The only 
time a larva was at all restless was when it was full-fed and was 
apparently searching for a suitable place for pupation. At this 
period the larva travelled all round the tumbler, climbing up and 
down the grass-blades in search of a suitable place. ‘This rest- 
lessness lasted from one to two days, I believe, but I cannot be 
certain of the exact time. In the four cases in which pupation 
took place, the larve, after all their wanderings, settled down for 
pupation in practically identical situations. In each case the 
position chosen was on the blotting-paper that covered the bottom 
of the tumbler, amongst the bases of the grass-stems. Here a 
few strands of silk were spun apparently at random amongst the 
srass-stems. The amount of silk used by the four larve varied, 
but I do not think that at the most more than a dozen strands 
were spun by any of them; in one instance I was under the 
impression that no silk had been spun, but as my observations 
had been only cursory, it is quite possible that the silk (if any 
were spun) might have escaped my notice. However, I can say 
that in these four instances of pupation the puparium was of the 
slightest possible description—so slight, indeed, as to give the 
impression that it is but the faint remaining trace of a former 
well-developed habit. I cannot definitely say that all the pupe 
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