HYPERIACEA. 



139 



Tribe II. Hyperiacea. 



Body thick-set ; head very large ; mandibles 

 large ; foot-jaws very small, and not nearly cover- 

 ing the mouth ; the lip formed by their union is 

 terminated by a central lobe and two leaf-like 

 plates. Tip of the abdomen forming a swimming 

 organ. (Parasitic on Medusce.) 



253 



256 



254 



255 257 



258 



260 



Hyperia (Latr.). Second pair of antennse style- 

 shaped and unfolded ; body inflated. 



H. Latreillei. Fig. 251 ; n. s. 

 galba. 



