164 Pub. Puget Sound Biol. Sta. Vol. 2, No. 44 



4. When the larva meets the proper host, the attachment filament is 

 injected into the flesh of the host. This is accomplished by the contrac- 

 tion of numerous muscle strands which are inserted in the proximal foot 

 of the attachment filament. 



5. Prior to sexual maturity the attachment of the larva is temporary. 

 There are really three stages of attachment: (1), when the animal first 

 attaches itself and hangs on by its frontal margin to the foot of the 

 attachment tube; (2), when the organism is attached by the second 

 maxillae to the foot of the attachment tube; and (3), when the organism 

 becomes permanently attached, either to the female as in the case of the 

 male, or to the funnel-shaped bulla as in the case of the female. 



6. BIBLIOGRAPHY 



Claus, C. 



1862. Ueber den Bau und die Entwicklung von Achtheres percarum. 

 Zeit. wiss. Zool., Vol. 11, pp. 287-308. 



Esterly, C. O. 



1908. The light recipient organs of the copepod Eucalanus elongatus. 

 Bull. Mus. Comp. Zool. Harvard College, Vol. 5S, pp. 3-56. 



Fasten, N. 



1912. The brook trout disease at Wild Rose and other hatcheries. 

 (The brook trout disease in Wisconsin waters.) Report Wis- 

 consin Fish Comm. 1911-1912, pp. 12-22. 



1913. The behavior of a parasitic copepod Lernaeopoda edwardsii 

 Olsson. Jour. An. Beh., Vol. 3, pp. 36-60. 



1914. Fertilization in the parasitic copepod Lernaeopoda edwardsii 

 Olsson. Biol. Bull., Vol. 27, pp. 115-127. 



1916. The eye of the parasitic copepod Salmincola edwardsii Olsson. 



Biol. Bull., Vol. 31, pp. 407-419. 

 1918. Trout and fish lice. Pub. Puget Sound Biol. Sta., Vol. 2, 



pp. 73-77. 



Mayor, M. 



1824. Notice sur une nouvelle espece de Lerneopode. Bull. Sci. Soc. 

 Phil. Paris, pp. 24-25. 



Milne-Edwards, H. 



1840. Histoire naturelle des Crustaces. Paris, Vol. 3, pp. 508-510. 



Olsson, P. 



1868. Prodromus faunae copepodorum parasitantium Scandinaviae. 

 Acta Universitatis Lundensis, Pt. 3, p. 36. 



