INTRODUCTORY STUDIES OF LIVING ANIMALS 5 



6. Beside the mouth are a long and a short pair of 

 "feelers"; perhaps these are for tasting or smelling. 

 What do roaches like to eat ? Do they choose their food ? 

 What damage do they do ? 



7. How can a house be rid of cockroaches? 



Suggested drawing. 



A cockroach, seen from above. 



THE LIVING SPIDER 



Materials. 



Living spiders, preferably large ones, in cages ; indi- 

 vidual specimens in battery jars or wide-mouth bottles. 

 Cocoons. Simple lenses. 



Observations. 



Each pupil may feel sure that if treated fairly any of the 

 common spiders may be handled without fear of bite or 

 injury. 



1. Note that the spider's body is of two regions, the 

 head-thorax and the abdomen, and that it is supported by 

 eight legs. To what part of the body are the legs attached ? 



2. Find the feelets ; if they are club-shaped, your speci- 

 men is a male. State their number and tell where they 

 are attached. What is the sex of your spider ? 



3. Usually there are eight tiny near-sighted eyes on the 

 front of the head. State the color of the eyes and by a 

 diagram indicate their arrangement. 



4. With what kind of material is the body covered (use 

 the lens) ? 



5. What is the color of your specimen ? What special 

 markings has it ? 



Find out the name of your kind of spider. 



