576 



ZOOLOGY 



SF.fT. 



(Genypterus Uacodes), and the rest of the body hanging freely 

 into the water. Lastly, in Trachcliastes (6} the second maxilla^ 



a.nt.2. 



7. Lernaea 



5. Lesheira 



G.Trachelia sres 



Fir,. 452. Various forms of parasitic Euccpepcda. -la, female ; -4b, male, nni.l, antennule ; 

 ant. 2, antenna; e. median eye ; e.s. egg-sac; f.l, 1.2, thoracic feet; M. male; MX.!?, second 

 maxillai. (After Gerstaecker, Claus, Cuvier, aiidG. M. Thcmpson.) 



(mx&) are greatly enlarged, and form a characteristic organ of 

 attachment. 



Arguing (Fig. 453) is the most familiar example of the Branchiura, or Carp- 

 lice. It is an external parasite on fresh- water Fishes (Carp, Stickleback, &c.), not 





