[Millipedes] Two pairs on most body segments; attached to underside of body [Centipedes] One pair per body segment; attached to sides of body; last pair extends backwards [Trait] 
Legs
L e g s
L o c o m o t i o n
F e e d i n g
S p i r a c l e s
R e p r o d u c t i v e o p e n i n g s
R e p r o d u c t i v e b e h a v i o r