Fig. 
6. 
~T 
jew) 
6. 
10. 
112 
Lepeophtheirus pectoralis, “ chalimus”’ stage. 
x 26. 
Caligus rapax, early “‘chalimus” stage attached 
to fin ray of young cod, the line d’e' represents 
the surface of the skin. X 54°4. 
Caligus rapax, “chalimus”’ stage, previous to 
throwing off the filament attachment. On tail 
of young lumpsucker. xX 15°24. 
Caligus rapax, mature, part of the frontal plate 
showing a lateral sucker. x 22. 
Pirate IT. 
Lepeophtheirus pectoralis. 
Female, ventral view, showing the various 
appendages and their muscles. x 17. 
Female, dorsal view, showing the chief muscles 
and blood currents. ‘The arrows indicate the 
course of the blood. x 17. 
Female, ventral view, showing the digestive 
gland, its duct and alimentary canal. x 17. 
Female, ventral view, showing the reproduc- 
tive organs. x 17. 
' Male, ventral view, showing the reproductive 
organs. x 26. 
Genital segment and abdomen of an immature 
female, ventral view, showing vulva (vw.). x 40. 
Spermatophores detached from genital openings 
of a female. x 206. 
Mouth from the anterior base, with the 
mandibles inside, showing the muscles and 
ducts of digestive gland. x 28. 
Digestive gland. x 77. 
Longitudinal section of the ovary. x 40. 
