62 



ANIMAL BIOLOGY 



FIG. 96. PILL 

 BUG. 



FIG. 98. SCORPION. 



FIG. 101. ONE SEG- 

 MENT OF CENTIPEDE 

 with one pair of legs. 





FIG. 102.- 



ONE SEGMENT 



OF THOUSAND 



LEGS with two 



pairs of legs. 



a b 



FIG. 99. TICK 

 before and after 



/ 



feeding. 



P 



FIG. 103. THOUSAND 



LEGS. 



FIG. 100. 

 CENTIPEDE. FIG. 104. A SPIDER. FIG. 105. KING CRAB. 



Illustrated Study. CLASSIFICATION OF ARTHROPODS. Key on p. 61. 



