250 HALF AN HOUR WITH CRUSTACEA. 



completely under the carapace, as a crab does his 

 " apron." They are nocturnal in their habits, and 

 love to lurk beneath stones. Some of them are 

 gaudily coloured, and are really attractive objects ; 

 such as the "Scarlet-squat" (Galathea nexa), whose 



Fig. 135. 



The Scaly Galathea (Galathea squa^niferd). 



whole length, however, is not two inches. They 

 generally frequent deepish water, and are most 

 abundant off the Devon and Cornish coasts. 



The lobster is a good typical example of the 



