THE WOLF MOTH. 
US 
covering of unbroken wood, as thin as writing-paper. Previous, 
therefore, to the chrysalis making its way through this feeble 
barrier, it could not have been suspected that an insect was 
lodged under the smooth wood. We observed more than one 
of these insects in the act of breaking through this covering, 
within which there is besides a round moveable lid, of a sort 
of brown wax/ 
The last-mentioned peculiarity is worthy of special notice, 
because it is not a general feature in the history of the Clear- 
wings. Just when they are about to change into the pupal 
form, they usually nibble a hole through the exterior of the 
branch, and then make a partial cocoon out of the debris , 
taking care to place themselves so that the head is towards the 
orifice. The abdominal segments of the chrysalis are furnished 
with points directed backwards, so that by alternately ex- 
tending and contracting the abdomen, the creature is pushed 
onwards. When it is going to break out of its chrysalis case it 
uses these little points, and forces itself partially through the 
hole, thus allowing the perfect moth to issue at once into the 
world. 
With two more species of lepidopteran burrowers, we must 
close our list, one of them boring into wood and the other into 
wax. 
The first of these insects, Tinea granella, is sometimes called 
the Wolf Moth. It is a very small insect, and is closely 
allied to the common clothes moth, so deservedly hated by fur- 
dealers, careful housewives, and keepers of museums. The 
larva of this insect feeds upon the corn, covering it at the same 
time with a tissue of silken threads. The most curious portion 
of the life of this insect is, that after the larva has finished 
eating the corn, it proceeds to the sides of the granary, and 
there burrows into the wood, making its holes so closely to- 
gether that, if the timber had been taken out of the sea, the 
Gribble would have had the credit of the tunnels. Nothing 
seems to stop this little creature, and it bores through deal 
planks with perfect ease, making its way even through the 
knots without being checked either by the hardness of the 
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