Woodworth. — The Palolo Worm. 



PLATE 2. 



Fig. 7. Ventral view of the head end of E. viridis. X 4£. 



Fig. 8. Anterior view of the head end of E. viridis. X 3. . 



Fig. 9. Anal end of the " Palolo " or epitokal part of E. viridis, showing three of 



the ventral eye-spots and the empty preanal segments, and anal cirri. 



X 6. 

 Fig. 10. The transition area between the " Palolo" and the atokal anterior part. 



Note the small size of the eye-spots on the posterior atokal segments. 



X6. 

 Fig. 11. The jaw apparatus of E. viridis, partly dissected. X 12. 

 Fig. 12. Left half of the jaw apparatus dissected to show the component parts. 



X 15. 

 Fig. 13. Parapodium of E. viridis from about the fortieth preanal segment. X 92. 

 Fig. 14. End of one of the compound chaetae of same. X 300. 

 Fig. 15. Parapodium of E. dubia. This figure is inverted. X 200. 



