298 



THE CRUSTACEA 



larval stages, more especially among Arctic, abyssal, and freshwater 

 forms. A specially interesting case is that of Palaemonetes varians, 



FIG. 174. 



Later 

 magn 



ter stages of Leucifer. A, younger Schizopod-stage. B, Inter Schizopod-stage (less 

 ified). C, Mastigopus-stage. it.', antenmilc ; a", antenna ; <'l>r<i>>r,, pleopods ; abg, 



