86 THE STORY OF ANIMAL LIFE 



are attached to the thorax, while the head, which 

 is separate from the thorax, unlike that of the 

 true spider, bears two pairs of leg-like appendages. 

 This is the chief of a group which are sometimes 

 placed in a class by themselves, on account of 



FIG. 21. A venomous spider-like animal, Galeodes araneoides, 

 from North Africa, natural size (Diagrammatic). 



their great differences from real spiders. Their 

 head is separated from the thorax ; and the thorax 

 is divided into three segments; these, however, 

 do not come out clearly in the diagram. The 

 head bears, posteriorly, a pair of appendages 



