110 



INSECTS. 



mens with long antennae and stout feet, mostly a single 

 pair to each body segment. These are popularly known 

 as centipeds. They may be picked up with forceps and 

 put into the cyanide bottle. 



The seclusive and predatory habits of the live chilopod 

 should be studied, and also the use of its antennae, and 

 the order of moving its feet in walking. 



Thousand-legs will be found in similar situations, distin- 

 guishable by its smaller size, shorter antennae, two pairs 

 of legs (apparently) to each segment, and by its disposi- 

 tion to curl up when touched. Specimens should be col- 

 lected for comparison. 



External Features. Write a description of the chilo- 

 pod which shall embody the answers to the following 

 questions : 



1. How is the body divided into 

 regions, as compared with other in- 

 sects ? 



2. How many segments in the 

 body? 



3. How many eyes are there, and 

 of what sort ? 



4. What is the shape of an an- 

 tenna, and how many segments in it ? 



5. How many appendages has the 

 first segment back of the head, and 

 of what sort ? 



6. Where are the poison fangs 

 situated ? 



7. Of what character are the 

 mandibles ? 



8. Why are not the legs underneath the body ? 



9. What adaptations do you discover of the shape and 

 structure of the body to the life the insect leads ? 



CHILOPOD OR CENTIPED 

 (X2). 



