PLATE XXXVI. 



Fig. I. Schizobranchia dubi'a sp. nov., p. 2oS. Pennoned seta from thoracic 

 torus, back view. 



2. Avicular uncinus from same torus. 



3. Another pennoned seta from thorax, nearly side view. 



4. Sabella humilis sp. nov., p. 195. Seta from collar fascicle of type. 



5. Another seta from collar fascicle. 



6. Seta from fourth thoracic fascicle. 



7. Pennoned seta from a thoracic torus. 



8. Avicular uncinus from an abdominal torus, in profile. 



9. Another from same torus, nearly front view. 



10. Avicular uncinus from thoracic torus. 



11. Pennoned seta from thoracic torus. 



12. Parasabella maculata sp. nov., p. 201. Avicular uncinus from an ab- 



dominal torus. 



13. Parasabella media sp. nov., p. 200. Avicular uncinus from a thoracic 



torus. 



14. Pennoned seta from a thoracic torus (no potash used). 



15. Parasabella maculata sp. nov., p. 201. Pennoned seta from a thoracic 



torus. 



16. Avicular uncinus from a thoracic torus. 



17. Schizobranchia dubia sp. nov., p. 208. One of the shorter or inferior 



setae from collar fascicle, back view. 



18. Seta from the abdomen, back view. 



19. One of the longer or superior setae from the collar fascicle, in profile. 



20. Side view of one of the superior setae commencing on the second thor- 



acic segment. 



21. Parasabella maculata sp. nov., p. 201. Pennoned seta from a thoracic 



torus, different position. 



22. An abdominal seta, in profile. 



23. Pseudopotamilla debilis sp. nov., p. 204. Inferior thoracic seta below 



collar, from specimen from Pacific Grove, California, about j^ view. 



24. Another from the same fascicle, different position. 



25. Sabella formosa sp. nov., p. 196. Pennoned seta from thoracic torus. 



26. Pseudopotamilla debilis sp. nov., p. 204. Avicular thoracic uncinus 



from specimen from Pacific Grove, California. 



27. Aspeira modesta sp. nov., p. 202. Pennoned seta from thoracic torus. 



28. Seta from abdomen, in profile. 



29. One of the longer inferior oblanceolate setae from the fourth thoracic 



fascicle. 



30. One of the shorter, more nearly spatulate setae from the same fascicle 



31. Pennoned seta from the thoracic torus, different position. 



32. Sabella formosa sp. nov., p. 196. Pennoned seta from thoracic torus, 



different position. 



33. Aspeira modesta sp. nov., p. 202. Superior lanceolate seta from the 



fourth thoracic fascicle, back view. 



34. Avicular uncinus from an abdominal torus. 



35. Avicular uncinus from a thoracic torus. 



Figures 4-6, 25, 27-30, 32-35 by A. H. Verrill, X 295; the others, 

 by the author, X Soo* 



(330) 



