SIGHT IN INVERTEBRATES 



163 



OCELLI 



JAW 



Fig. 6. Front view of the head of the caterpillar of a Privet Hawk Moth. 

 The ocelli are placed low down on each side. 



little more than light-gatherers and certainly give no sharp 

 image as can be seen from the way in which a caterpillar 

 fumbles about in selecting a suitable place to start eating a 

 leaf of its food-plant. 



Although most adult insects have complicated compound 

 eyes, most of them have ocelli as well, often reduced in 



OCELLI 



COMPOUND 



Fig. 7. Front view of the head of a Honey Bee showing the three ocelli and the 

 two compound eyes. The antennae and the jaws and other mouth parts are 

 seen. 



