Index 



Mastogloia, 61. 



braunii, 61. 

 "Means of the ratio," 421, 422, 423. 

 Melosira, 338. 



crenulata, 62. 



distans, 62. 



granulata, 48, 50, 54, 56, 62, 98. 



subflexilis, 61. 



varians, 48, 56, 62. 

 Merced River, California, 9. 

 Merismopediuin glaucus, 36. 

 Mesodinium acarus, 85. 

 Micrococcus, 34. 

 Microcystis, 35, 36. 

 Microgromia socialis, 77. 

 Microsetella, 420. 



Migration, diurnal, of plankton, 431. 

 Miller, E. C, 293, 383, 401; acknowl- 

 edgment, 456. 

 Mission Bay ("False Bay"), Cali- 

 fornia, locality for marine dia- 

 toms, 413; area, depth and tidal 

 flow, 414. 

 Moberg, E. G., cited, 438. 

 Moll, cited, 384. 

 Mollusca, variation in, 316. 

 Monostroma, 46. 

 Monostyla eorauta, 106. 



lunaris, 106. 

 Morphology of the Digestive Tract 



of Teredo navalis, 455. 

 Mougeotia, 63. 

 Murphy, Helen E., 449. 

 Mya, 463. 



Mvtilina mucronata, 106. 

 Naia (?) sp., 112. 

 Naples, locality for Teredo, 456. 

 Nasturtium officinalis, 15. 

 Nauplius, 110, 450, 451. 

 Navicula, 450. 



affinis, 56. 



alpestris, 48, 56. 



ambigua, 62. 



bacillum, 48, 57. 



borealis, 62. 



cryptocephala, 62. 



didyma, 57. 



dubia, 57. 



fulva, 62. 



gracilis, 48, 57. 



helvetica, 61. 



iridis, 62. 



lanceolata, 61, 62. 



oblonga, 58, 61. 



parva, 62. 



pupula, 62. 



pusilla, 58, 61. 



pygmaea, 62. 



rhomboides, 58, 61. 



rhynchocephala, 62. 



smithii, 58, 61. 



viridis, 58, 62. 



Nebela collaris, 77. 

 Nephrocytium agardliianum, 46. 

 Niewendam, Netherlands, locality for 



Teredo, 366. 

 Nitzsehia, 338. 



acicularis, 48, 58. 



angularis, 58. 



closterium, 338. 



dubia, 61. 



gracilis, 61. 



pungens, 338, 340, 341. 



seriata, 338, 340, 341, 345, 374, 375, 

 440, 442. 



sigma, 58. 



sigmoidea, 58. 



vermieularis, 58, 62. 

 Noctiluca miliaris, 344. 

 Nostoc, 34, 37, 119. 

 Notholca, egg, 106. 



longispina, 106. 



striata, 102. 

 Notommata aurita, 106. 

 Nuclearia simplex, 78. 

 Oakland Harbor, California, 300, 312. 

 Ocurrence of Marine Copepoda in the 

 Plankton at La Jolla, California, 

 417-433. 

 Odontidium elongatum, 62. 

 Oelosoma, sp., 112. 

 Oikomonas, 75. 

 Oithona, 420. 



nana, occurrence, 449; food, 450; 

 stages of development, 451; diag- 

 nostic characters, key, 453; re- 

 sults of rearing experiments, 454. 

 Oleum, California, 314, 315. 

 Oligochaetes, 112. 

 Oncaea, 420. 

 Oncobyrsa rivularis, 38. 

 On the Effect of Low Salinity on 



Teredo navalis, 349-368. 

 Oscillatoria, 34, 37. 



formosa, 37. 



tenuis, 37. 

 Ostracoda, 108. 

 Oxytoxum scolopax, 344. 

 Pandorina morum, 71. 

 Paracalanus, 420. 



parvus, 429. 

 Paramoecium aurelia, 82. 



bursaria, 82. 



caudatum, 82. 

 Parasites (endoparasites) on marine 



plankton, 97. 

 Paulsen, O., acknowledgment, 344. 

 Pectinatella, 112. 

 Pedalia mira, 106. 

 Pediastrum, 38, 40. 



boryanum, 41. 



duplex, 42. 



simplex, 43. 



[481] 



