28 THE ENTOMOLOGIST. 
and as these agree in every particular, apparently, with the 
Doubleday series, I have made the following notes on the 
chief points of difference between the (as I believe) two 
species :— 
1. C. contaminellus is the larger insect of the two, and has 
much broader anterior wings. 
2. The tips of the anterior wings in C. contaminellus are much 
less pointed than in those of the specimens from Deal and 
Shoeburyness. 
3. The Deal insects vary much in the intensity of colouring, 
while C. contaminellus is constant. 
4. The dark, longitudinal, lmear marking or shade occurring 
in C. contaminellus, from the centre of the anterior wings to the 
thorax, is entirely absent in the other specimens. 
5. The two transverse lines crossing the anterior wings of the 
specimens from Deal are almost precisely the same in shape as in 
C. geniculeus, the outer one nearer the hind margin being rather 
more elbowed near the costa, and the V mark just above the anal 
angle being very conspicuous. ‘These lines are differently placed 
in C. contaminellus, and the YV mark replaced by a small blotch. 
Mr. Threlfall has written me that he takes Crambus contami- 
nellus, and that it is remarkably constant in colouring. This 
would bear out my remark above, and confirms the opinion I had 
formed from the insects I had seen previously. 
One or two points in the habits of the imagines are rather 
remarkable, and very different from the habits of the other 
species of the genus Crambus. When the specimens of the genus 
Crambus are at rest, I think, in every case that I have noticed, 
the body is closely appressed to the substance on which it is 
resting, the wings being folded well over the abdomen. The Deal 
insects rest with the extreme end of the palpi against the object, 
the palpi, thorax, and abdomen being in an almost straight line, 
and inclined to the object on which it is resting at about an angle 
of 30°; the wings are folded completely over each other at the 
end of the body, being drawn out beyond the abdomen almost to 
a point. The last pair of legs are used as a sort of prop, being 
passed well back under the abdomen, the abdomen resting in an 
inclined position on them. ‘The antenne (of the females, 
especially) are very brittle, as I found to my cost when 
setting them. 
