600 



Dysderides. — Eyes 0. Spinners G. 



p. 5. Fakes articulated, either vertically or on an 



inclined plane, -with a more or less lateral 

 movement. 

 Normal spiracular openings 4, near together, 

 forming a narrow, transverse, oblong figure, 

 two on each side of the genital aperture, 

 the anterior opening on each side leading 

 to Tube-Trachece. Terminal tarsal claws 2 

 or 3. 

 Spiders mostly of moderate size and cylindri- 

 cal form; colours subdued, and markings 

 the exception. 

 Drassides. — Eyes 8, in two transverse rows. Spinners 6. 



p. 1 1 . *Falces articulated vertically with lateral move- 



ment. 

 *Normal spiracular openings 2 ; one on oach 

 side of the genital aperture, and leading to 

 Sac-Trachem. 

 Terminal tarsal claws 2 only. 

 Spiders mostly of moderate size, cylindrical 

 form, and very sombre colours, usually with 

 either an indistinct pattern, or none at all. 



EETITELAEI^E. 



Spiders spinning snares of a more or less diffuse and mazy 

 nature, consisting usually of thin sheets of web, surrounded by 

 numerous irregularly disposed, intersecting lines affixed to the 

 neighbouring objects. 



Eresides. — Eyes 8. Four form a large quadrangular figure, and 



p. 45. four others a small one at the middle of the 



anterior side of the large one. 



Legs of fourth pair with calamistra on the 



meta-tarsi of females. 



♦These characters are common to all the remaining families of British 



