INDEX. 



671 



Ophiocoma nigra, development of, 12 



Ophiodromus Jlexiiosus, 607 



Ophiothrix fragilis, 13, 107 



Ophryotrocha, rate of growth in, 316 



Ophryotrocha piierilis, 623 



Oria armandi, 643 



Orton, J. H. The Ciliary Mechanisms 

 on the Gill and the Mode of Feed- 

 ing in Amphioxus, Ascidians, and 

 Solenomya togata, 19 



— On some Plymouth Holothurians, 

 211 



— On the Breeding Habits of Echinus 

 miliaris, with a Note on the Feeding 

 Habits of Patella vulgata, 254 



— On Ciliary Mechanisms in Brachio- 

 pods and some Polychaetes, with a 

 Comparison of the Ciliary Mechan- 

 isms on the Gills of Molluscs, Proto- 

 chordata, Brachiopods and Crypto- 

 cephalous Polychaetes, and an Ac- 

 count of the Endostyle of Crepidula 

 and its Allies, 283 



— Preliminary Account of a Contribu- 

 tion to an Evaluation of the Sea, 312 



— On a Hermaphrodite Specimen of 

 Amphioxus, with Notes on Experi- 

 ments in Rearing Amphioxus, 506 



Owenia fusifarmis, 632 

 Oxydromus propinquus, 607 

 Oyster spat, rate of growth, 323 



Palaemon serratus, rate of growth, 318 



Palinurus vulgaris, development of, 179 



Pallasia mtirata, 645 



Paludestrina stagnalis, 110 



Patella vulgata, 108 ; feeding habits, 



254, 257 ; rate of growth, 319, 



323 

 Pedinaria {Amphictene) auricoma, 637 



— (Lagis) Koreni, 637 



— {Petta) pusilla, 637 

 Pedicellina cernua, 108 

 Pelvetia canaliculata, 105 

 Peracreadium covimune, 469, 475, 500 



— ge7m, 469, 476, 500 



Petromyzon fluviatilis, observations on 

 the Ammocoete of, 38 



Pharyngora bacillaris, 470, 478, 498, 



499, 501 

 Phasianella pullus, 109 

 Pholoi' Tnimda, 614 

 Phoronis, lophophoral cirri of, 301 

 Phyllitis fascia, 105 

 Phyllochaetopterus anglica, 63 1 

 Phyllocotyle gurnardi, 499 

 Phyllodoce lamelligera, 616 



— laminosa, 617 



— maculata, 617 



— paretti, 617 



— ruhiginosa, 617 



— teres, 617 



Phyllophora membranifolia, 105 

 Pilumnus hirtellus, 112 

 Pinnotheres pisum, 113 

 Pionosyllis divaricata, 598 



— hyalina, 600, 601 



— lamelligera, 598 



— prolifera, 600, 602 



— (Typosyllis) alternosetosa, 600 

 armillaris, 600 



krohnii, 603 



p/rolifera, 600 



variegattty 602 



Plankton Diatoms, Culture of, 417, 555 

 Platyhelminthes, rate of growth in, 



316 

 Pleuronectes flesus, 355 ; host of Podo- 



cotyle, 473, Derogenes, 487 



— limanda, 355, 467 ; host of Sterin- 

 gotrema, 479, Zoogonoides, 483, Dero- 

 genes, 487 



— niicrocephalus, 355 ; host of Sterin- 

 gotrema, 479, Zoogonoides, 483 



— platessa, host of Zoogonoides, 483 

 Plumuria elegans, 105 

 Plumularia catharina, 260 



— echinulata, 106 



— }nnnat((, 106 



— similis, 106 



Plymouth collecting grounds, 593 

 Plymouth Holothurians, 211 

 Podocoryne carnea, 106 

 Podocotyle atherinae, 469, 474, 500 



— atomon, 469, 473, 498, 499, 500, 501, 

 502 



— reflexa, 469, 473, 500, 501 



— syngnathi, 469, 473, 503 



