INDEX. 



213 



Plagusia, i. 175. 



range of vision of, i. 177. 

 Plants, absent in deep water, i. 107. 

 Piatt, R., i. xii. 

 Platydia anomioides, ii. 77. 

 Plectromus suboibitalis, ii. 28. 

 Pleurocarpa raniosa, ii. 137. 

 Plenropus, i. 187. 



Pleuiotonia (Aucistrosyrinx) elegans, ii. 66. 

 Pleurotoma Blakeana, ii. 06. 

 Plenrotoma cnrta, ii. 60. 

 Pleurotoma limacina, ii. 06. 

 Plenrotoma subgi-undifera, ii. 66. 

 Pleurotoniaria Adausouiana, ii. 61). 

 Pleurotoniaria, bathymetrical range of, i. 



169. 

 Pleurotoniaria Quoyana, ii. ()\). 

 PleurotoniidiB, ii. 00. 

 Pliobothrus symmetricus, ii. 138, 139. 

 PluniularidiB, ii. 13."). 

 Pneumodermon, i. 121. 

 Podocidaris seulpta, ii. 92. 

 PoUicipes, ii. 51. 

 Polycistinte, i. 195. 

 Polyclonia, i. 177. 



lives on the bottom, i. 185. 

 Polymorphina ovata, ii. 106. 

 Polyps, ii. 142. 

 Polystomella crispa, ii. 169. 

 Polystomellse, i. 271. 

 Polytrema rainiaceum, ii. 169. 

 Pomalostegus stellatus, ii. 57. 

 " Porcupine," i. 245. 

 cruise of the, i. 40. 

 deep-sea temperatures by, i. 46. 

 expedition of the, i. 43. 

 Porina subsulcata, ii. 82. 

 Porites elavaria, i. 82. 

 Porites embryo, i. 74. 

 Porites f urcata, i. 82. 

 Porocidaris, i. I.j8. 

 Porocidaris Sharreri, ii. 90, 91. 

 Poromya, ii. 73. 

 Porpita, i. 121, 180. 

 Porpitidae, affinities of, i. 184. 

 Port de France, i. xvi. 

 Porto Rico, land shells of, i. 11.5. 

 Pourtales, L. F., i. vii, 3. 



exploration of, in " Bibb," i. 45. 



exploration of, in "Corwin," i. 45. 



on affinit j^ of deep-sea corals and tertiary 



fossils, ii. 17. 

 on boundary of siliceous sand, i. 279. 

 on characteristic foraminifera, i. 271. 

 on corals of the "Blake," ii. 148. 

 on corals of West Indies, ii. 18. 



Pourtales, L. F., on deep-sea corals and ter- 

 tiary types, ii. 19. 



on penetration of light, i. 305. 



Report on Coi-als, i. xxi. 

 Pourtales Deep, i. lUCi. 

 Pourtales Plateau, i. 62, 284, 286. 



fauna of, i. 91. 

 Pourtalesia miranda, ii. 101. 

 Pourtalesiie, i. l.">9. 



affinities of, ii. 101. 



forerunners of spatangoids, ii. 97. 

 Praya, ii. 135. 



Pre-archsean continent, i. 127. 

 Preservation of animals in bottona deposits, 



i. 170. 

 Pressure, adaptation of marine animals to, 

 i. 304. 



range of, for marine animals, i. 301. 

 Primnoa Pourtalesii, ii. 146. 

 Primordial ocean, fauna of, i. 153. 



Mallet on, i. 153. 

 Protoplasm, i. 149. 



Protozoans without solid tests, ii. 157. 

 Pseudodiadematid;«, i. 1.59. 

 Psolus tuberculosus, ii. 85. 

 Psychropotes longicauda, ii. 86. 

 Pterophryne, nest of, ii. 31. 

 Pteropliysa grandis, i. 184. 

 Pteropod and globigerina ooze, i. 264. 

 Pteropod ooze, depth at which it appears, i. 

 50, 147. 



depth at which found, i. 265. 



in Straits of Florida, i. 283. 

 Pteropod shells, in globigerina ooze, i. 

 283. 



decay and solution of, i. 283. 



Murray on solution of, i. 283. 

 Pteropod silt in Windward Passage, i. 



235. 

 Pteropods, i. 190. 

 Pteroti-achea, i. 191. 

 Ptyehogena lactea, ii. 128. 

 Pulvinulina auricula, ii. 169. 

 Pulvinulina Menardii, ii. 169. 

 Pumice, decomposition of, i. 267. 



floated out to sea, i. 207. 



taken by tow-net, i. 267. 



Pycnogonidse, eyes of, ii. 39. 



Report on, by E. B. Wilson, i. xxi. 

 Pycnogonids, ii. 49. 

 Pylocheles Agassizii, ii. 40. 

 Pyrosoma, i. 187. 

 Pyrosomse, i. 198. 



Quoy and Gaimard on limit of reef-building 

 corals, i. 74. 



