PLATE 21. 



Autolytus planipalpus Chamberlin (pelagic male). 



Figures 1, 2. 



1. — Anterior end and appendages. X 63. 



2. — Composite setae, middle region of body. X 1637. 



Odontosyllis atypica Chamberlin. 



Figures 3, 4. 



3.— Compound seta, distal end. X 1637. 



4. — Parapodium from middle region of body, anterior view. X 63. 



Syllis remex Chamberlin. 

 Figure 5. 

 5. — Parapodium from middle region of bodj', caudal view, with notocirrus broken off. X 27. 



