68 
CORN. 
spouts by spinning tliin web and hanging there. The mill is in 
constant work, and I should have thought this would have prevented 
them from lodging, but it does not seem to affect them at all. You 
will perceive the difficulty there is in putting anything in the spouts 
that would affect the flour.” 
The flour sent showed the great difficulty of the case, for it 
gradually became spun together, and also to the sides of the box in 
which it was placed, by the caterpillars’ webs, so tenaciously that it 
could be lifted in lumps, and only a little flour let fall; whilst some 
still clung to the sides of the box, almost as if in sticky lumps. From 
the specimens sent I reared a few moths about the end of November, 
which proved on comparison (for which I am indebted to Mr. 0. E. 
Janson) with type specimens, which had been compared with those 
of Prof. Zeller, to be true Ephestia Kuhniella , Zell. One of these 
specimens is figured at p. 56, magnified, with natural size given 
accompanying. The colour of the fore wings may be generally 
described as of rather pale grey, with darker transverse markings, and 
the hind wings are peculiar for their whitish semi-transparency, with 
a darker line from the point along a part of the fore edge. 
On examining the infested flour early in January the mass was so 
completely spun together that, after pulling some lumps of it away, I 
found that the rest hung down in ragged lumps or clots so felted together 
by the caterpillars’ web that but little flour remained in loose state. 
From a small mass of these clots, little less than two inches and a 
quarter, by two inches across, and half an inch deep, I could only by 
repeated shakings get about a teaspoonful of flour. The spun-up 
masses were occupied by live caterpillars, some chrysalids living and 
dead, and remains of dead moths. 
The caterpillars varied in size from two-eightlis up to five eighths 
of an inch in length, and correspondingly in colour, the younger ones 
being of flesh or pale red colour, and the largest almost white; the 
shape cylindrical, somewhat slender, with 16 feet, that is, three pairs 
of claw-feet, four pairs of sucker-feet, and a very well-developed pair 
besides beneath the tail, by the help of which, although the largest of 
the larvae were sluggish, the younger travelled nimbly, and could move 
backwards or forwards at pleasure, or were able to attach themselves 
at once to a foreign substance, as the finger or hand. The head 
yellowish brown, darker in front, and with dark brown jaws; a 
transverse patch on the segment next the head, this rather pale 
yellowish brown, with a faint pale central line dividing it from back to 
front, and (in the oldest specimen) a small brown spot on each side of 
the segment below the patch. Along the back, excepting towards the 
head and tail, were four small dark dots on each segment, above, two 
on each side the centre. On the segments near the head the spots 
