Fig. 
114 
Prats IV. 
Lernea branchialis. 
Mature female, from the right side. The line 
f’ g' shows how much of the anterior portion 
is buried in the branchial arch. x 4°5. 
Nauplius stage, newly hatched. x 50°8. 
Very young female, unfertilised, dorsal view. 
From gills of flounder. x 515. 
Fertilised female, dorsal view. Just after 
leaving the gills of flounder. x 27°6. 
Mature male, dorsal view. From gills of 
flounder. x 28°5. 
Fertilised female, ‘* Penella” stage, dorsal view. 
Just after settling on gills of Gadus (whiting). 
x 15°5. 
Later stage than Fig. 6, from the left side. 
The folding has just finished. Nat. size. 
Apex of gill filament of flounder, showing mal- 
formation caused by the young Lernea. x 18°6. 
Apex of gill filament of flounder, normal. x 18°6, 
Puate V. 
Lernea branehialis. 
Fertilised female, ventral view, showing the 
appendages, the reproductive organs, and 
nervous system. x 47°6. 
Nearly median longitudinal section of the same. 
x 47°6. . 
Transverse section in the region of the eyes. 
x 80. 
Mature female, from the right side, showing 
the first maxillipede and the four pairs of feet, 
the alimentary canal and the reproductive 
