APPENDIX. 387 



any misconception of what is intended in the following 

 catalogue. 



The mode in which the species are arranged will be seen 

 from the following synoptical arrangement : — 



Synoptical A rrangement of the Genera and Species 

 of Sertularian Zoophytes collected on the Voyage 

 of the Mattlesnake. 



Order. ANTHOZOA HYDROIDA. 



Sub-order. Sertulabina. 



Earn. I. SERTULAEIADiE. 



(jren. 1. Sertularia. 



§ 1 . Cells alternate (Sertularia.) 

 (a) Cells distichous. 



1. S. elongata. 



2. S. divaricata, n. sp, 



3. S. crisioides. 

 {h) Cells secund. 



4. 8. pristis. 



§ 2. Cells opposite (Dynamena) 

 (a) Cells distichous, 



5. S. suhcarinata, n, sp. 



6. S. patula, n. sp. 



7. S. orthogonia, n. sp. 



8. S. mutulata, n. sp. 



9. S. operculata, 



10. S. divergens, n. sp. 



11. (S. trigonostoma, n. sp. 



12. /S. digitalis, n. sp. 



13. S. loculosa, n. sp. 



14. S. unguiculata, n. sp, 



15. S. tridentata^ n. sp. 

 2. Pasythea. 



16. P. hexodon, n. sp. 

 2 c 2 



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