64 



Lessons in Zoology. 



abdomen. With the amall Bwimmerets the lobster oariiea its eggs ; 

 with the pair of large swimmeretB and the telaon it takes long 

 jampa backward. 



Biting Jaw, 



Mandible, . 



Little Jawa, or f First Maxilla, . 



AcoesBory Jawa, | 



or Maxillae, [ Second Maxilla, 



Foot Jawa, 

 cr Mazillipeds, 



First Maxilliped, 



Second Maxilliped, 



Third Maxilliped, 

 Fig. S. 



Outline of new work We will count the appen- 

 dages of the head-thorax. There are five pairs of legs 

 (Fig. 1, C — ci), and one pair end in great claws. 

 There are two pairs of little legs. There are " lots of 

 little legs and things " next to the big claws. 



All these little legs can be seen fastened to this piece 

 of pasteboard How many pairs are there ? 



There are two pairs of little legs. There are three 

 pairs that are split, and look something like swimmerets. 

 There are two great teeth, with a pair of tiny legs fast- 

 ened to them. 



The three pairs next the great claws are the jaw-feet, 

 called also foot-jaws or maxillipeds. The next two pairs 

 are little jaws or maxillae, and the " two great teeth " 



