XIV LIST OF ILLUSTRATIONS 



Page 



11. Coelorhynchus sexradiatus. Type 459 



12. Coelorhynchus triocellatus. Type 466 



13. Coelorhynchus dorsalis. Type 470 



14. Coelorhynchus macrolepis. Type 479 



15. Coelorhynchus cingulalus. Type 481 



16. Coelorhynchus platorhynchus. Type 486 



17. Coelorhynchus acantholepis. Type. After Radcliffe ("Coelorhynchus 



platorhynchus, form Alpha") 489 



18. Coelorhynchus acantholepis. Type. 490 



19. Coelorhynchus carinifer. Type 491 



20. Coelorhynchus smithi. Type. Upper left-hand figure represents a 



longitudinal section of scale, to show structure of spinules 495 



21. Coelorhynchus radcliffei. Paratype. Adult 500 



22. Coelorhynchus radcliffei. Paratype. Young 500 



23. Coelorhynchus radcliffei. Type. After Radcliffe ("Coelorhynch us com- 



mutabilis, form Beta") 501 



24. Coelorhynchus radcliffei. Paratype. After Radcliffe (" Coelorhynchus 



commutabilis, form Gamma") 501 



25. Coelorhynchus weberi. Type. After Radcliffe ("Coelorhynchus com- 



m utabilis, form Eta' ') 504 



26. Coelorhynchus weberi. Type 505 



27. Coelorhynchus commutabilis. Type. After Radcliffe 509 



28. Coelorhynchus commutabilis. After Radcliffe ("Coelorhynchus com- 



mutabilis, form Delta") 509 



29. Coelorhynchus commutabilis. After Radcliffe ("Coelorhynchus com- 



mutabilis, form Alpha' ') 510 



30. Coelorhynchus spinifer. Type 517 



31. Hymenocephalus gracilis. Type 523 



32. Hymenocephalus striatissimus aeger. Type 533 



33. Hymenocephalus nascens. Type 537 



34. Hymenocephalus barbatulus. Type 539 



35. Malacocephalus luzonensis. Type 542 



36. Ventrifossa nigrodorsalis. Type 547 



37. Ventrifossa divergens. Type 551 



38. Lionurus infranudis. Type 556 



39. Lionurus evides. Type 557 



40. Lionurus decimalis. Type 561 



polychaetous annelids collected by the united states 

 Fisheries steamer "Albatross" in the waters adjacent 

 to the Philippine Islands in 1907-1910 



By A. L. Treadwell 



1-4. Mysta maculata. 1. Head, X20. 2. Fifteenth parapodium, X45. 

 3. Compound seta, X295. 4. Parapodium from middle region, 



X45 . 593 



1-4. Nereis integer. 1. Dorsal view of head, X 22. 2. Ventral view of head, 

 X22. 3. Seventh parapodium, X45. 4. Eighth parapodium, 



X45 596 



