BY R. VON LENDENFELD, PH.D. 631 



55. Genus Zygocannota 



210. Z. purpurea. Haeckel 



56. Genus Zygocannula 



211. Z. diploconus. Haeckel 



212. Z. undulosa. Haeckel 



57. Genus Aequorea 



213. A. eurhodina. Peron et Leseur 



58. Genus Rhegmatodes 



214. R. tkalassina. Haeckel 



12. Family Carnpanulidse 



13. Family Hydractinida? 



1. Sub-family Cytseina? 



2. Sub-family Hydractininse 



59. Genus Ceratella 



215. C. fusca. Gray 



60. Genus Dehitella 



216. D. atrorubens. Gray 



III. Suborder Hydrocorallin^e 



14. Family Stromatoporidpe 



15. Family Milleporidse 



61. Genus Millepora 



217. M. tortuosa. Dana 



62. Genus Arachnopora 



218. A. Argentea. T. Woods 



16. Family Stylasteridse 



63. Genus Distichopora 



