r rom the gentleman wno ravoured us witn 
tlie drawing, we have received the following 
account ; which, he says, is ail that he knovt's 
xespe<5iing this very curious inse£t. 
The Porcupine Caterpillar is a large grub» 
-which weaves for it's residence, and protec-, 
tion from external injuries, a case, the inte- 
rior of which is, as it were, Hned with the 
finest silk: the exterior is fortified with small 
pieces of sHght twigs, or different lengths, 
all of which are i>ecured to the case bv the 
gummy juice with which the litde reptile spinfr 
it's silk. 
'* To the case there are two apertures, 
. 'lich it opens or cloiw^s at pleasure. When 
the grub ^vi^hes to feed, il^e largest aperture 
ii» made use of, from whence the little thing 
crawls about halfway out; instantly retreat- 
ing, however, into it's case, on the smallest 
appearance of danger, and at the same instant 
fastening this end of the covering to whatever 
it may have been crawling on, whether twig or 
leaf, by a thread or two of silk. The other 
aperture Is at the farther end, and is used for 
discharging 
