Chamberlin. — Pacific Coast Polychaeta. 



PLATE 3. 



Nainereis nannobranchia Chamberlin. 

 Fig. 1. Thoracic neuropodial seta of anterior series. X 180. 



Idanthrysus ornamentatus Chamberlin. 



Fig. 2. Opercular paleolus of inner series. X 38. 



Fig. 3. Opercular paleolus of outer series. X 38. 



Fig. 4. Thoracic paleolus. X 38. 



Fig. 5. Abdominal uncinus. X 616. 



EupoLYMNiA crescentis Chamberlin. 



Fig. 6. Thoracic uncinus. X 616. 

 Fig. 7. Abdominal uncinus. X 616. 



PsEUDOPOTAMiLLA PANAMiCA Chamberlin. 

 Fig. 8. Thoracic uncinus. X 616. 



SciONiDES DUX Chamberlin. 

 Fig. 9. Thoracic uncinus. X 616. 



