Index 



neural function, 362; in flagel- 

 lates, 381; homology of, in cilia 

 and in flagellates, 383. 



New International Encyclopaedia, 

 quoted, 284. 



Ocean currents, 207. 



Ocean depths, 215. 



'Donoghue, C. H., cited, 479, 483. 



Odostomia franciscana, 303, 320, 821. 



Ogata, S., 488. 



Oleum, California, 31. 



Ophryodendron, 95. 



Oi^hryoscolex purkyngei, 380. 



Orientation of Erythropsis, On the, 

 89. 



Ornithocercus, genus, 405. 



Orthoperidinium, subgenus, 412, 413, 

 428, 431, 432, 433, 434, 435, 438, 

 444^ 446, 447, 452, 458, 460, 461. 



Ostrea elongata, 308, 311. 



lurida, 303, 304, 306, 307, 308, 311, 

 316, 320, 321, 322. 



Oxyrrhis, 405. 



Pacific coast, life zones on, 175. 



Packard, E. L., 299. 



Palmiridae, 62. 



Panope generosa, 308, 312. 



Paphia staminea, 303, 307, 308, 310, 

 313, 314, 315, 320, 322. 



Paramoecium bursaria, 341, 371. 



Paraperidinium, subgenus, 413, 421, 

 428, 429, 433, 434, 435, 438, 444, 

 446, 449, 454, 458, 460, 461. 



Parker, G. H., acknowledgment, 108. 



Parker, T. J., cited, 479, 482, 483. 



Pathogenicity of Giardia microti, 4. 



Paulsen, O., "cited, 412. 



Pavillard, J., 96, 97; cited, 413. 



Pecten, 312. 



Perediniae, found at surface, 200. 



Peridinidae, asymmetry in, 403, 443; 

 member of Dinifera, 404; char- 

 acters of, 405; skeletal variation 

 in genera of, 408, 435, 458; 

 major skeletal characters, 408- 

 414; plate development in genera 

 of, 416-419, 458; multiplication 

 of plates, 419-423; origin of 

 accessory plates, 439, of dorsal 

 plate patterns, 442. See also 

 Peridinium. 



Peridiniella, genus, 416. 



Peridinium, genus, 398, 399; skeletal 

 variations, 403, 408; systematic 

 position, 404, 408; nomenclature 

 of the plates, 405-407. 

 Skeletal characters, 408-414, 459; 

 antapical horn, 409; girdle, 411; 

 plate patterns, 412, figures show- 

 ing, 409; size, shape, surface, 

 etc., 414, 459 ; plate relationships, 

 414. 



Plate development, 416-419, 459; 

 exuviation, 417; origin of acces- 

 sory plates, 439, 459. 



Skeletal variations, regions of, 423, 

 460; figure showing, 423. 



Plate patterns, basis for subdivi- 

 sion, 426-428; origin of dorsal, 

 442, 443; paired area of change, 

 444; completeness of series of 

 variations, 446-447 ; variations in 

 length of critical sutures, 448- 

 450; significance of variation in 

 suture length, 450-456; muta- 

 tions in, 456, 463; influence of 

 environment on, 457, 465. 



Subdivisions, 428, 435; definition, 

 436; regions of variation in shell 

 of, 437, 444. 

 Peridinium achromaticum, 432. 



aciculiferum, 432. 



adriaticum, 430. 



anthonyii, 431. 



bipes, 431. 



breve, 430. 



brevipes, 430. 



cerasus, 429. 



cinctum, 431. 



claudicans, 431, 432, 435, 450, 456, 

 458. 



conicoides, 431. 



conicum, 431, 442, 455. 



crassipes, 410, 430, 442. 

 forma autumnalis, 430. 

 forma typica, 430. 



cummingii, 410. 



curvipes, 413, 429, 430, 



depressum, 431. 



divergens, 430, 435, 442, 448, 449, 

 450, 451, 452, 454, 463; charts 

 and figures of plate patterns, 

 415, 422, 423, 425, 429. 



excentricum, 419, 433, 447. 



faerbense, 431. 



globulus, 430. 



granii, 429, 435, 450, 456, 457. 



islandicum, 429, 443. 



laeve, 432. 



latum, 432. 



lenticulatum, 430. 



leonis, 431. 



marchicum var. javanicum, 432. 



marsonii, 434. 



minutum, 432. 



var. tatihouensis, 434, 459. 



mite, 413, 430. 



monacanthus, 430. 



monospinum, 432. 



multipunctatum, 432. 



obtusum, 431. 



oceanicum, 431, 435, 442, 450, 456, 

 457, 458. 



ovatum, 429, 434, 450, 456. 



pallidum, 429. 



[526] 



