PLATE 15. 



Nepthys ectopa Chamberlin. 



Figiu'es 1-7. 



1. — Anterior region, dorsal view. X 13.5. 



2. — Proboscis, distal view. X 13.5. 



3. — Right thirty eighth parapodium, anterior view. X 63. 



4. — Finer anterior neuropodial seta, exposed portion. X 40S. 



5. — Principal type of neuropodial seta, smaller form. X 408. 



6. — Principal type of neuropodial seta, common form. X 40S. 



7. — Notopodial aciculum, distal portion. X 408. 



Anaitides compsa Chamberlin. 



Figures 8, 9. 



8.— Distal end of seta. X 281. 



9. — Second setigerous parapodium. X 18. 



