LIST OF ILLUSTRATIONS. 15 



Page 86, Spicules of Gorgoniae, muck enlarged. Verrill, Transactions of the Con- 

 necticut Academy of Sciences, vol. i., Plates 4 and 5. 



88, Isis Hippuris. La Vie et les Mceurs des Animaux. 



89, Corallium rubrum, the coral, natural size. L. Sanford, from specimen, - 

 Extremity of branch of C. rubrum, enlarged, with some of the animals ex- 

 panded. Lacaze-Duthiers, from La Vie et les Mceurs des Animaux. 



91, Cophobelemnon clavatum ; the small figure, enlarged view of one of the 

 polyps. Verrill, Proc. Essex Institute, vol. iv., Plate 5. From a drawing 

 by Dr. Stimpson. 

 Veretillum Stimpsoni, enlarged 3 diameters. Verrill, Proc. Essex Institute, 

 vol. iv., Plate 5. From a drawing by Dr. Stimpson. 



95, Caulastraea furcata. Author's Zoophyte Atlas, Plate 9. 



101, Hydra. Le Monde du Mer. 



102, Plumularia falcata. Le Monde du Mer. 



103, Millepora alcicornis. La Vie et les Moeurs des Animaux. 



104, Animals of M. alcicornis, enlarged. L. Agassiz, Contributions to the Nat- 



ural History of the United States ; vol. iii., Plate 15. 

 106, Hornera lichenoides : 1. natural size ; 2. part of branch enlarged. Smitt's 



Mem. des Bryozoaires. 

 Discosoma Skenei, part of a group much enlarged. Ibid. 

 130, High Island, with Barrier and Fringing Reefs. Author's Geol. Report. 

 134, Map of New Caledonia. Darwin on Coral Islands. 

 140, The Lixo Coral Reef, Abrolhos. Hartt's Brazil, p. 202. 

 149, Coral Reefs off the North Shore of Tahiti. Author's Exp. Geological Re- 

 port, from the Wilkes Expl. Exp. Maps. 

 162, Coral Island or Atoll. Wilkes's Narr. Expl. Exped. 

 165, Map of Gilbert or Kingsmill Islands. Author's Geol. Rep. ; from Expl. 



Exp. Maps. 

 168, Maps of Taiara, Henuake, Swain's Island, Jarvis's Island, and Fakaafo. 



Author's Geol. Rep. ; from Expl. Exp. Maps. 

 170, Map of Menchicoff Atoll. Darwin on Coral Reefs ; from Kotzebue's 



Atlas. 

 176, Section of the rim of an Atoll. Author's Exp. Geol. Report. 

 179, Blocks of Coral on the shore platform of Atolls. Author's Geol. Report. 

 187, Map of Maldive Archipelago. Darwin on Coral Reefs. 

 189, Map of Mahlos Mahdoo Atoll, one of the Maldives. Darwin on Coral 



Reefs. 



191, Map of Great Chagos Bank. Darwin on Coral Reefs. 



192, East and West Section across the Great Chagos Bank. H>id. 



193, Metia, an elevated Coral Island. Wilkes 's Narrative of Expl. Exp., vol. i. 

 218, Map of the Bermuda Islands. Reduced from an English Chart. 



231, The " Old Hat." Author's Exp. Geol. Report. 



239, Harbor of Apia. Author's Exp. Geol. Rep. ; from charts of the Wilkes 



Expl. Exped. 

 242, Part of North Shore of Tahiti. Ibid. 

 244, Harbor of Falifa. Roid. 

 246, Whippey Harbor. Ibid. 



260, Section illustrating the Origin of Barrier Reefs. Ibid. 



261, Map and Ideal Section of Aiva Island. Ibid. 



265, Map of Gambier Islands. Darwin on Coral Reefs. 



266, Section illustrating the Origin of Atolls. Author's Exp. Geol. Rep. 



