PLATE 26. 



Rhynchonerella pycnocera Chamberlin. 



Figvires 1-6. 



1. — Anterior end, dorsal view. X 20. 



2. — Anterior end, ventral view. X 20. 



3. — Parapodium, middle region of body. X 48. 



4. — Parapodium, caiidal region of body. X 48. 



5. — Tip of finer seta of first parapodium. X 1075. 



6. — Distal end of ooarser seta of first parapodium. X 1075. 



