10(5 



THE MORPHOLOGY OB^ THE COMMON CRAYFISH. 



] The second maxillii^ede (fig. 45, B) has essentially the 

 same composition as the first, but the exopodite (ex) is 

 relatively larger, the endopodite (;ip — dji) smaller and 

 softer; and, while the ischiopodite (?/j) is the longest 

 joint in the third maxillipede, it is the meropodite (mp) 

 which is longest in the second^ p^n the first maxillipede 



Fig. A?>.—Afttficiis fm-\ofilis.—k, the firpt ; B, the second maxillipede 

 of the left side ( x 3). c,r/?, coxopodite ; &j^ basipodite ; e, h>\ po- 

 dobranchia ; rjJ, epipodite; en, endopodite; frr, exopodite ; ip, is- 

 chiopodite : mp, meropodite ; cp, carpopodite ; pp, propodite ; dp, 



dactylopodite. 



(fig. 45, A) a great modification has taken place. The 

 coxopodite {cxp) and the basipodite (hp) are broad thin 

 I^lates with setose cutting edges, while the endopodite 

 {en) is short and only two-jointed, and the undivided 

 portion of the exopodite [ex) is very long. The place of 



i 



