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



PLATE 28 



a' first antennae. 

 a", second antennae. 

 bu, bulla. 



ft, foot of attachment filament. 

 m.t, mouth tube. 

 mx", second maxillae. 

 mxp, maxillipeds. 

 t, tube of attachment filament. 



A', places where claws of second maxillae have punctured foot of 

 attachment filament. 



Fig. 29. Immature female with maxillipeds (mxp) completely 

 modified into chela-like structures. X70.4. 



Fig. 30. Enlarged drawing of foot (ft) of attachment filament 

 at about stage represented by Figs. 28 or 29^ in which 

 are seen marks (x) where the claws of second maxil- 

 lae (mx") punctured the foot (ft). X400. 



Fig. 35. Enlarged drawing showing region of permanent attach- 

 ment between second maxillae (mx") of adult female 

 and the chitinized, funnel-shaped bulla (bu). X80. 



Fig. 36. Maxilliped of adult female copepod. X 148.8. 



