INDEX 



659 



flagella, 47 n. ; of Ehizopoda, 49, 

 SO f., 52 ; of Foraminifera, 49, 50, 60, 

 61, 65 ; of Microgromia, 59, 60 ; of 

 Lieierkuhnia, 61 , of Allogromia, 65 ; 

 of Miliola, 65 ; of RotaZia, 65 ; of 

 Squamulina, 65 ; of Heliozoa, 49, 50, 

 71, 72 f. ; of Radiolaria, 49, 50, 79, 80 ; 

 of Lankesteria, 96 n. ; of Flagellates, 

 109, 110 ; transitory, in Flagellates, 109 ; 

 of Stentor, 152, 154 ; of young Oellius 

 varius, 173, 174 



Pseudopodiospores, 68 f. 



Pseudospora, 89 ; F. lindstecltii, 89 



Psilaster, 470 ; P. acuminatus, 469 



Psolus, 569, S7S; P. ephippifer, 574, 

 575, 602 



Psychropotes, 57S 



Pteraster, 455, 466 ; P. stellifer, 465 ; 

 P. militaris, 466 



Pterasteridae, 455, 4^6 



Pteroceplutlus^ 97 



Pteroeides, 359, 361 



Pteroeididae, 361 



Puffballs, 91 



Pulsatile vacuole, 14; = Contractile vacuole, 

 q.v. 



Pulsellum, 18, 114 



Punjab, dourine disease in, 119 



Pupa, of Holothuroidea, 615 



Pure cultures, 43 



Putrefaction, organisms of, 42 f., 116 f. 



Pycnolithus, S4S 



Pycnopodia, 453, 474 



Pygaster, 658, 559 



Pygastrides, 548, 558 ; P. relicius, 548 



Pylome, 53 ; of Rbizopods, 53 f. ; double, 

 in monstrous Rbizopods, 55 ; of Sia- 

 phorodon, 60 ; of Foraminifera, 64 ; of 

 Radiolaria, 83 ; of Sphaeropylida, 77 n. ; 

 of Nassellaria, 83 



Pyloric caeca (and duct), of Asterias 

 ruiens, 439; oi Poroellanaster pacificus, 

 459 ; absent in Hyphalaster moseri, 459 



Pyloric sac of Asterias rubens, 438 



Pyramids, building-stone of, 70 



Pyrenoid, 37, 115; of Sphaerella, 126 



Pyrocystis, 110 ; P. fusiformis, 132 



PyrsonympJm, 111 ; flagella of, 114 



Pytheas, 223 



Pythonasier, 4^4 



Pytbonasteridae, 4^4 



Pyxicola, ISS, 158 



Qiiadrula, S2 ; Q. symmetrica, 55 ; test of, 



54 

 Quartan fever, a parasitic disease, 104 f. 

 Quartzites, Eadiolarian, 87 

 Quasillina, 224 

 •Quatrefages, de, 376 

 Quelch, 280 



Quinqudocidina, S9, 65 f. 

 Quinqueloculine type, 67 



Radial blood-strand (or vessel), of Asterias 

 rubens, 450 ; of OpMothrix fragilis, 488 



Radial canal, of water-vascular system, 

 428 ; of A sterias rubens, 441 ; of OpMo- 

 thrix fragilis, 480, 486 ; of Echinus 

 esculentus, 517 ; of Echinarachnius 

 parma, 547 ; of Holothuria nigra, 560 ; 

 of Pelagothuria, 572 ; of Cystoidea, 

 •580, 597 ; of C'arpoidea, 580 ; of 

 Thecoidea, 580 ; of Crinoidea, 580 ; of 

 Blastoidea, 580, 599 ; oiAntedon rosacea, 

 583 ; development of, in Asterina 

 gibiosa, 611 ; in Holothuroidea, 615 ; in 

 Antedon rosacea, 619 



Radial fission in Volvocaceae, 110 f. 



Radial nerve-cord, of Asterias rubens, 444, 

 445, 446, 447 ; of Ophiothrix fragilis, 

 488 ; of Echinus eseidentus, 518, 519, 

 522 ; of Holothuria nigra, 566 ; of oral 

 system of Antedon rosacea, 584 ; of 

 ooelomic system of A. rosacea, 584, 585 



Radial ossicle — see Radial Plate 



Radial perihaemal canal, oi Asterias rubens, 

 448 ; of Ophiothrix fragilis, 488 ; of 

 Echinus esculentios, 518, 524 ; of ffolo- 

 thuria nigra, 566 



Radial plate, of Ophiothrix fragilis, 484 ; 

 of Cladophiurae, 500 ; of calcareous, ring 

 in Holothuria nigra, 566 ; in Holo- 

 thiiroidea, B67, 569 ; in Elasipoda, 569 ; 

 in Molpadiida, 569 ; in Dendrochirota, 

 669 ; of calyx in Antedon rosacea, 582, 

 584, 585 ; in Crinoidea, 588 ; in 

 Hyocrlnus, 588, 590 ; in Rhizocrinidae, 

 588, 590 ; in Metacrinus, 588, 591 ; in 

 Pentacrinus, 588, 591 ; in Holopus, 

 592 ; in Blastoidea, 599 ; development, 

 in Antedcm rosacea, 619 f. 



Radiolaria, 49, 50, 75 1. ; streaming of 

 granules, 17 ; brood - formation, 33, 

 85 f. ; regeneration, 35 ; animal nutri- 

 tion of, 40 ; relations of, 49 ; fresh- 

 water ( = Heliozoa), 71; shells and 

 skeletons of, 77, 78, 80, 82 f., 84, 85 ; 

 symbiosis of Diatoms and yellow cells 

 (=Zooxanthdla) in, 82, 86 f., 125; 

 parasites in, 86 f., 161 ; Dreyer's scheme 

 of skeletal forms in meshes of an alveolar 

 system, 84 ; habitat, 87 ; census of, 87 ; 

 palaeontology, 87 ; students of, 88 



Radiolarian ooze, 87 



Radiomyaria, SS4 



Radius, of Echinus eseidentus, 503 ; 

 synonym of compass, 526 ; of a Holo- 

 thuroid, 562 ; of Spatangoidea, 553 : of 

 Antedon roso,cea, 582 ; of Promacho- 

 crinus, 594 



Rain, bloody, 125 



Rainey's tubes, 108 



Ramulina, 59 



Raphidiophrys, 71, 74 



Raspailia, 225 



