Order Araneida 



THE RETITELARIAN OR NET-WEAVING SPIDERS 



Family Pholcid/e. P. 325. 

 Family Theridiid/E. P. 330. 

 Family Linyphiid^e. P. 368. 

 Family Argiopid^e. P. 400. 

 Family Mimetid^e. P. 518. 



THE LATERIGRADE OR SIDEWISE RUNNING SPIDERS 



Family Thomisid^. P. 521. 

 Family Selenopid^e. P. 550. 

 Family Heteropodid^e. P. 551. 



THE TUBITELARIAN OR TUBE-WEAVING SPIDERS 



Family Ctenid^e. P. 555. 

 Family Clubionid^e. P. 557. 

 Family Agelenid/E. P. 582. 



THE citigrade or running spiders 



Family Pisaurid/E. P. 598. 

 Family Lycosid/E. P. 618. 

 Family Oxyopid/E. P. 657. 



THE SALTIGRADE OR JUMPING SPIDERS 



Family Attid/E. P. 661. 



TABLE FOR SEPARATING THE NORTH AMERI- 

 CAN FAMILIES OF SPIDERS 



A. With two pairs of book-lungs. 



B. Without a cribellum and a calamistrum; legs not ex- 

 tremely long. 

 C. Palpus of the pedipalp arising from the tip of the coxa 

 or from near the tip. P. 229. Aviculariid^e 



CC. Palpus of the pedipalp arising from the outer side of 

 the coxa near the middle of its length P. 252. Atypid^e 

 BB. With a cribellum and a calamistrum; legs slender and 

 extremely long. P. 257. Hypochilid^e 



222 



