262 LIST OF ILLUSTRATIONS. 



Page 



26. Morphology of ^c<mo2oa, after Gosse and Hollard . . 133 



27. Morpliology of Pleurobrachla, altered from Agassiz and 



Huxley 145 



28. INIorphology of Zoantharia Sclerodermata, after Huxley . 156 



29. Columnaria FrankUnii . . . . . . . .158 



30. Tubipnra musica . ' . . . . . . .159 



31. Development of Pleurobrachla, after Strethill Wright . 181 



32. Turbinaria pallfera, after Dana 188 



33. DendropliyJlia nigrescens, after Dana . . . . .189 



34. Zoantharia Malacodermata, after Couch, Forbes, and Gosse 197 



35. Zoantharia Sclerobasica, after Dana 202 



36. Zoantharia Sclerodermata, after Milne Edwards and Haime 204 



37. FennatulidcB and Cor^omWcCjafter Patterson, Milne Edwards 



and Haime 211 



38. Zaphrentis cylindrica , . 215 



39. Various forms of Ctenophora, after De Blainville, Gegen- 



baur, Lesson, Patterson, and the Author. . . . 217 



