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 
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Z 
v 1 2 Ne 3 
Soqlela meine | ee ee notes 
Fic. 231.—Thelyphonus giganteus, Koch. 
@. Pedipalpi. g. Tail. 
b. Moveable fang or claw forming with h. Chelicerae, 
c. Claw on 4th joint, a didactyle claw. m. Hyes. 
d. Claw on 8rd joint. o. First palpal joint, with characteristic 
jf. Segmental elongation of abdomen denticulations, 
supporting tail. 
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. 
