J 



PLATE VI. 



FIGS. 



1, 2. Caligus rapax M. Edwards, (p. 48.) 



1. Dorsal view, ? , x 13. 



2. Dorsal view, <$ , x 13. 



3. Caligus brevicaudatus A. Scott, (p. 56.) 



3. Dorsal view, ? , x 16. 



4, 5. LepeopJitheirus hippoglossi (Kroyer). (p. 67.) 



4. Dorsal view, ? , x 5. 



5. Dorsal view, , x 7*5. 



