SPIDERS. 



Ill 



The mouth is armed with a pair of jaws which are at- 

 tached above the month and hang down in front, at the 

 end of which are the poison-fangs. With these they are 

 enabled to secure and kill the flies and other insects upon 

 which they feed. The following figure represents the jaws 

 or mandibles. 



X^ O 



Po co 



m 



p I 



ria. 107. FRONT PORTION OF COMMON GARDEN SPIDER GREATLY ENLARGED, showing, 

 Palpi ; m, Mandibles ; 1 1, a Portion of the First Pair of Legs, and above, the Front of the 

 Cephalo-thorax, with the Eight Eyes upon it. 



Directly behind the mandibles, are two smaller jaws, 

 called maxillai (see Fig. 108), which aid in crushing the food 

 and arranging it for the mouth. 



TIG. 108. INNER JAWS, OR MAXILLJS, OP A COMMON GARDEN SPIDEB. The first Joints of 



the Palpi are seen also. 



The spider has eight eyes, situated on the front part of 

 the cephalo-thorax. They look like little black beads, and in 



