Chamberlin. — Pacific Coast Polychaeta. 



PLATE 1. 



Hesperonoe senilis Chamberlin. 



Fig. 1. Notopodial seta of first type. X 152. 



Fig. 2. Notopodial seta of second type. X 152. 



Fig. 3. Neuropodial seta of first type. X 152. 



Fig. 4. Neuropodial seta of second type. X 152. 



Nereis mendocinana Chamberlin. 

 Fig. 5. Dorsal view of prostomium. X 47. 



Leodice valens Chamberlin. 



Fig. 6. Composite seta. X 300. 

 Fig. 7. Mandibles. X 14. 

 Fig. 8. Maxillae I. X 14. 



