lO CONNECTICUT GEOL. AND NAT. HIST. SUKVEY. 



FIGURES IN TEXT 



PACE 



1 . Section of ray of Starfish 23 



2. Diagram of water- vascular system of Starfish . . 27 



3. Comparison of rate of growth of two starfishes under dif- 



ferent conditions . . . • 42 



4. Larva of Starfish ... 54 



5. Larva of Starfish .... 54 



6. Young Starfish shortly after metamorphosis 55 



7. Young Starfish devouring a mollusk . S8 



8. Pedicellariae of Starfish . . 62 



9. Oral surface of disk of Ophiuran 70 



10. Diagram of section of arm of Ophiuran 72 



11. Ijaxva, oi O'phixi.ra.n, Ophiopholis aculeata . -78 



12. Larva of Ophiuran, <9^^/«ra ^r«/«//«fl . 78 



13. Aboral skeleton of Sea-urchin, .<4r^a«'a/K«^/»/a/a 88 



14. Aboral skeleton of Disk-urchin, Echinardchnius parma 93 



15. Cleavage of egg of Sea-urchin ... 101 



16. Larva of Sea-urchin ..... 102 



17. Young Sea-urchin immediately after metamorphosis 103 



18. Young Sea-urchin, .<4r^a«a/««c/«/a/a . 104 



19. Young Disk-urchin, Mdlita pentapora 105 



20. Diagram of section of body of Holothurian . 115 



21. Oral tentacle of Holothurian . . 120 



22. Cucumaria pulcherrima , . . 130 



23. "PlaX&s ot Cucumaria pulcherrima • '3' 



24. Plates of Cucumaria pulcherrima 132 



25. Plates of Thyone briareus . . 134 



26. Plates of Thyone unisemita 136 



27. 'PlaXas ot Thyone scabra . 137 

 38. Plates of Synapta inhcerens ,^ 

 29. Plates of Synapta roseola ,^, 



