PLATE 19. 



Nans simplex Chamberlin. 



Figures 1-4. 



1. — Anterior region, dorsal view (upper tentacular cirri and lower tentacles missing 



2. — Posterior region, dorsal view (most of the cirri missing). X 64. 



3. — Tip of notopodial aciculum. X 1075. 



4. — Distal portion of notopodial seta, view of broader surface. X 1075. 



X64. 



Autolytus torquens Chamberlin. 



Figures 5-7. 



5. — Anterior parapodium. X 64. 



6. — Parapodium from middle region of body. X 64. 



7. — Composite seta from anterior parapodium. X 1637. 



Autolytus obliquatus Chamberlin. 

 Figure 8. 

 8. — Third setigerous pai"apodium. X 64. 



