INTERNAL ANATOMY OF INSECTS. 173 
than that of the male. I once observed a pair of Pen- 
tatoma oleracea, a very pretty bug, in coitu, both sexes 
being ornamented with white spots, and by them stood 
a third distinguished from them by red ones. I do not, 
however, build on this circumstance, though singular ; 
but mention it merely that you may keep it in your eye. 
It would be curious should it turn up, that, to answer 
some particular end of Providence, in some tribes of 
insects there are two kinds of ?nales, as in the gregarious 
ones two descriptions of females. 
I am, &c. 
