404 



ZOOLOGY 



This group includes the two genera Phrynus and Thely- 

 phonus ; they are confined to the tropical and subtropical 

 regions of both the Old and the New World. They are of 

 considerable size. 



The abdomen is distinctly marked off from the thorax ; 

 it consists, in Phrynus, of eleven segments, and does not 



J/ncJics 



Fig. 231. — Thelyphmius giganteus, Koch. 



a. Pedipalpi. 



b. Moveable fang or claw forming with 



c. Claw on 4th joint, a didaotyle claw. 



d. Claw on 3rd joint. 



/. Segmental elongation of abdomen 

 supporting tail. 



g. Tail. 

 h. Chelicerae. 

 m. Eyes. 



0. First palpal joint, with characteristic 

 dentioulations. 



exhibit any distinction of meso- and meta-soma; in Thely- 

 phonus, however, the tenth, eleventh, and twelfth segments 

 are small, and the twelfth bears a long -jointed filament 

 representing the telson. 



