132 



CRUSTACEA. 



Tribe I. Sedentaria. 



Abdominal appendages plate -like and 

 hidden beneath the abdomen Bopyridce. 



Abdominal appendages thread-like, and 

 surrounding the abdomen lonidcs. 



12,2 



233 



Family I. Bopyridjs. 



Bopyrus (Latr.). Body pear-shaped, depressed, 

 twisted to one side. Parasitic beneath the cara- 

 pace of Prawns, &c. Female six times as large as 



the male. 



B. squillarum. Fig. 226; n. s. 

 hippolytes. 



