THE CRUSTACEA 167 



The arched front of the carapace has a projecting and 

 even fringe of fine silky hairs, of a golden yellow. 



Its habitat is fine white sand at extreme low-tide level, 

 where it may be discovered by watching the first return of 

 the tide, when it issues from its hiding. 



The angular crab (Gonoplax angulata), of red colour and 

 quadrangular body, belongs to this family, but is not 



Fig. 73. Gonoplax angulata. 



common, at least on this shore, as I have seen but two 

 specimens (Fig. 73). 



I am taking the crabs in irregular order as regards the 

 usual routine, but have not pledged myself to system ; 

 in fact, those which follow are usually placed at the be- 

 ginning of the list. These are the " Spider Crabs." They 

 (in Glaus) constitute the family Oxyrhyncha (not OxyrTiyn- 

 chus, which is a family of fishes). They are so termed on 

 account of their having a sharp, beaklike process in front, 



