ANNULOSA : ARACHNIDA. 



323 



appearance of a Scorpion in miniature. The abdomen is seg- 

 mented, but there is no "post-abdomen," as in the true Scor- 

 pions. Eyes may be wanting, and the under surface of the ab- 



Fig. 166. A, Chelifer cancroides, showing the chelate maxillary palpi, considerably en- 

 larged. B, Phalangiuvt copticum, of the natural size. C, Tlielyphonus giganteiis. 

 D, Galeodes araneoides, of the natural size. 



domen carries a small spinning-organ. The " Book-scorpion " 

 {Chelifer) is commonly found in old books and in dark places. 



Family 3. Solpugida. In this family (fig. 166, D) the abdo- 

 men is not only very distinctly segmented, but is also clearly 

 separated from the cephalothorax, which is likewise segmented. 

 The falces or mandibles are chelate, and of immense size ; 

 and the maxillary palpi constitute long feet. The front of 

 the head carries two eyes, and respiration is by tracheae. 

 Galeodes may be considered as the type of the group, all the 

 members of which are tropical or subtropical in their range, 

 and are nocturnal and carnivorous in habit. 



ORDER IV. PEDIPALPI. Abdomen segmented, with or with- 

 out a "post-abdomen" Respiration by means of pulmonary sacs. 

 In this order are the true Scorpions, together with certain other, 

 animals which are in some respects intermediate between the 

 Scorpions and the true Spiders. The members of this order 



