A/vftis niger. y^, inch long. Deep black. Head flat and horn-like, marked with three impressed 

 dots. The legs short. It dwells in silk-covered tubular 

 holes underground. Spiders of this group have eight 

 eyes. 



The Dysderidie form an intermediate group, with 

 four lung-slits ; but the claws working sideways, and 

 only six eyes. They live in silk tubes under stones. 



Dysdera interita. 5 s inch lone. Rust-colored. 



Pylaris bicolor. 3 B inch long. Dark brown. Body 

 part and first two pairs of legs black. 



Atyfns niger. 



Dysdera interita. 



Pylorus bicolor. 



SECOND GROUP. 



Eyes unequal in size. 



in three or four rows. 



Build no webs to catch their prey 





on face and forehead. Those of the lower row always the smallest and the 



four in center the largest. The legs are long and the last pair the 



t 1 1 

 longest - - ( Page 13) Lycosidce. 



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