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THE POPULAR SCIENCE MONTHLY 



all this you see that the mouth of the lobster is well armed with teeth 

 and scissors to tear and cut its food. Counting from the front, it has 

 first the true jaws (mandibles) ; then the two pair of little jaws (max- 

 illa?) ; and these are followed by the three pair of foot-jaws (maxilli- 



Long Feeler, 

 or Antenna. 



Little Feeler, or 

 Antennule. 



Ear-tube. 



Fio. 19. 



Fig. 20. 



pedes) making, altogether, six pair, which are all turned up against 

 the mouth. In front of the jaw are two very long jointed feelers called 

 antennas, but you seldom see them at their full length (Fig. 15) ; they 

 are easily broken (Fig. 19). Next to the feelers (antennae) are two 



Eve. 



Eve stalk. 



Fie. 21. 



little feelers, or antennules (Figs. 15, 20) ; and last of all, in front, 

 comes a pair of joints which support the eyes (Fig. 21), called the 

 optic pair of appendages. Now let us begin with the eyes, and go 

 back to the tail, to see how many pairs of feelers, jaws, hands, feet, 



