THE METAMORPHOSIS OF A CRAB. 



213 



along its outer edge. These hairs are much more finely 

 plumose than those on the other mouth-parts. 



7. The yii'st maxUUped (Fig. 109, Mjp^). This con- 

 sists of a large muscular protopodite, which carries an 

 exopodite {ex) and an endopodite (en) . The exopodite is 



Fig, 109. 



Fig. 109. — Maxillipeds of the same zoea. 

 from a sketch bj- E. B. Wilson. ) 



Mp^. First Maxilliped. JUj>-. Second maxilliped. 

 en. Endopodite. 



(Drawn by W. K. Brooks 

 ex. Exopodite. 



two-jointed, flattened, and is usually bent upwards against 

 the side of the carapace. It ends in four long, two-jointed, 

 plumose swimming-hairs. The endopodite is about as 



