CLASSIFICATION OF SPIDERS. 



The spiders .ire divided into two groups: 



I. Spidi-rs with four breathing holes, or lung-slits on the 

 bellies, and their mouth parts with the poison fang-claws working 

 pick-axe like. 



J. Spiders ,vith 

 two lung-slits on the 

 fore part of their bel- 

 lies and their fang- 

 claws working sideways, pincers-like. 



fore part 



up and d< 



of their 



wnwai (U 



laws. 



FIRST GROUP. 



The hist group contains Southern 

 spiders, Tarantula and Trap-door spi- 

 ders. Our largest spider, the Tarantula 

 {Mygale lientsii) lives in the Southwest- 

 ern states. This group is represented in 

 the Northern states by one kind only. 



(9) 



J\ii\intu!n. 



