PTINUS. 
37 
to have a projecting point on each side. Its larva 
resembles that of the preceding species, and is 
found in similar situations. 
Ptinus pectinicornis is readily distinguished by 
the remarkable appearance of the am ennje, the 
longer joints of which are so deeply pectinated as 
to have the aspect of feathered antennae. It is 
one of the smaller species, measuring in length 
about the eighth of an inch, and is of a slender 
habit, with a subcylindric body. It is often found 
in old wood, and aniong papers, books, &c. wdiich 
it perforates and destroys. 
