ARACHNIDA : SCORPIONS. 



345 



arthron, a joint, and gaster, 

 belly. 



Some kinds respire by lung- 

 sacs, and some by means of 

 tracheae. In the true Scor- 

 pions found in warm climates 

 the hind body is much elon- 

 gated, and ends in a curved 

 point or sting, which discharg- 

 es a -poisonous fluid into the 

 wounds which it makes. 



In old books and unused cab- 

 inets there are found minute 

 members of this sub-order 

 which have the abdomen rather 

 broad, flattened, eleven-jointed, 

 and without appendages, and 

 their palpi large, and formed 

 like those of the scorpion ; these are False-scorpions or 

 Pseudo-scorpions. 



FIG. 409. 



Scorpion, Butkus carolinianus, Beau- 

 voia. 



False-scorpion, Chelifer cancroides, Linnoeus. Enlarged. 



To the Pedipalpi belong also the Daddy Long-legs or 

 Phalangidae ; these have the legs excessively elongated. 

 15* 



