HALF AN HOUR WITH CRUSTACEA. 259 



The latter often assumes two colours, a bright green 

 and as bright a red. Neither is uncommon. 



Fig. 147. 



The Night-walker (TV^a edutis). 

 Fig. 148. 



Hippolyte varians. 



Our task is now ended we have endeavoured to 

 give a sketch of the most familiar sea-side objects, 

 and those of the most typical kind, which best 

 illustrate zoological principles. If we have been 



