CHAETOGNATHA COLLECTED BY STEAMER ALBATROSS. 277 



EXPLANATION OF PLATES. 



[All figures drawn with camera luclda.] 

 PLATE 34. 



FIG. 1. Sagitta philippini, new species. X 18. 



. 2. Anterior teeth and few of posterior teeth of S. philippini. X 250. 



3. Vestibular ridge of S. philippini. X 250. 



4. Seizing jaws of S. philippini. X 800. 



PLATE 35. 



FIG. 5. Sagitta pukhra Doncaster. X 8. 



6. Sagitta bedoti Be>aneck. X 8. 



7. Sagitta ferox Doncaster. X 8. 



8. Sagitta dccipiens Fowler. X 18. 



9. Sagitta neglecta Aida. X 18. 



PLATE 36. 



FIG. 10. Eukrohnia richardi Germain and Joubin. X 6. 



11. Pterosagitta draco (Krohn). X 25. 



12. Pterosagitta draco with collarette partly torn away and with no vestige of 



ovary or seminal vesicle. X 25. 



13. Pterosagitta draco with fully mature ovaries and with collarette almost 



entirely missing. X 25. 



PLATE 37. 



FIG. 14. Teeth of Eukrohnia hamata (Mobius). X 100. 



15. Teeth of Eukrohnia richardi Germain and Joubin. X 100. 



16. Vestibular ridge of Sagitta minima Grassi. X 400. 



17. Seizing jaw of Sagitta minima. X 800. 



18. Portion of vestibular ridge and posterior teeth of Sagitta dccipiens Fowler. 



X 400. 



19. Vestibular ridge of Sagitta pukhra Doncaster. X 400. 



20. Vestibular ridge of Sagitta bedoti Be"raneck. X 400. 



21. Vestibular ridge of Sagitta ferox Doncaster. X 400. 



22. Seizing jaw of Sagitta decipiens Fowler. X 800. 



23. Seizing jaw of Sagitta pukhra Doncaster. X 800. 



24. Seizing jaw of Sagitta bedoti Be>aneck. X 800. 



25. Seizing jaw of Sagitta ferox Doncaster. X 800. 



26. Seizing jaw of Eukrohnia richardi Germain and Joubin. X 800. 



27. Seizing jaw of Eukrohnia hamata (Mobius). X 800. 



PLATE 38. 



FIG. 28. Posterior extremity of a small mature Sagitta enflata Grassi. X 25. 



29. Posterior extremity of a mature Sagitta minima Grassi. X 25. 



30. Ventral view of anterior extremity of Sagitta bedoti Be"raneck. X 50. 



