STEM M ATA. 211 
Lucy, How wonderful I Of all the 
delightful things you have told me^ not 
one is so curious as this ! 
Mother, I have yet another won- 
derful circunistanGe for yon : many in- 
sects have other organs of sight besides 
their reticulated eyes. 
Lucy, More eyes ! Where can they be 
placed ? 
Mother. Generally above the others, 
that is, more towards the top of the bead ; 
they are like shining raised points or 
specks J and each contams a single eye. 
Lucy, Of what use can they be, to 
animals that have so many others ? 
Mother, These eyes are called steTti-- 
mata, and are of material use in watch- 
ing any enemies which maybe above, and 
rather behind. They are also probably 
adapted to a wider extent of view, and 
are therefore supposed to assist in guiding 
the flight of those insects who possess 
them. When the three stemmata of a 
bee were covered with pitch, by a person 
who tried the experiment, it flew at 
