INDEX 



659 



flagella, 47 n. ; of Rhizopoda, 49, 

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

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

 Lieberkuhnia, 61 , of Allogromia, 65 ; 

 of Miliola, 65 ; of Rotalia, 65 ; of 

 Squarmdina, 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 Gellius 

 varius, 173, 174 



Pseudopodiospores, 68 f. 



Pseudospora, 89 ; P. lindstedtii, 89 



Psilaster, 470 ; P. acuminatus, 469 



Psolus, 569, 573 ; P. ephippifer, 574, 

 575, 602 



Psychropotes, 572 



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

 P. militaris, 466 



Pterasteridae, 455, 466 



Pterocephcdus, 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, 346 



Pycnopodia, 453, 474 



Pyg aster, 558, 559 



Pygastrides, 548, 558 ; P. relictus, 548 



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

 in monstrous Rhizopods, 55 ; of Dia- 

 phorodon, 60 ; of Foraminifera, 64 ; of 

 Radiolaria, 83 ; of Sphaeropylida, 77 n. ; 

 of Nassellaria, 83 



Pyloric caeca (and duct), of Asterias 

 rubens, 439; of Porcellanaster pacificus, 

 459 ; absent in Hyplialaster moseri, 459 



Pyloric sac of Asterias rubens, 438 



Pyramids, building-stone of, 70 



Pyrenoid, 37, 115; of Sphaerella, 126 



Pyrocystis, 110 ; P. fusiformis, 132 



Pyrsonympha, 111 ; flagella of, 114 



Pytheas, 223 



Pythonaster, 464 



Pythonasteridae, 4&4 



Pyxicola, 138, 158 



Quadnda, 52 ; Q. symmetrica, 55 ; test of, 



54 

 Quartan fever, a parasitic disease, 104 f. 

 Quartzites, Radiolarian, 87 

 Quasillina, 224 

 Quatrefages, de, 376 

 Quelch, 280 



Quinqueloculina, 59, 65 f. 

 Quiuqueloculine type, 67 



Radial blood-strand (or vessel), of Asterias 

 rubens, 450 ; of Ophiothrix fragilis, 488 



Radial canal, of water-vascular system, 

 428; of Asterias rubens, 441 ; of Ophio- 

 thrix fragilis, 480, 486 ; of Echinus 

 esculentus, 517 ; of Echinarachnius 

 parma, htf ; of Holothuria nigra, 560 ; 

 of Pelagothuria, 572 ; of Cystoidea, 

 580, 597 ; of Carpoidea, 580 ; of 

 Thecoidea, 580 ; of Crinoidea, 580 ; of 

 Blastoidea, 580, 599 ; of Antedon rosacea, 

 583 ; development of, in Asterina 

 gibbosa, 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 esculentus, 518, 519, 

 522 ; of Holothuria nigra, 566 ; of oral 

 system of Antedon rosacea, 584 ; of 

 coelomic system of A. rosacea, 584, 585 



Radial ossicle see Radial Plate 



Radial perihaemal canal, of Asterias rubens, 

 448; of Ophiothrix fragilis, 488; of 

 Echinus esculentus, 518, 524 ; of Holo- 

 thuria nigra, 566 



Radial plate, of Ophiothrix fragilis, 484 ; 

 of Cladophiurae, 500 ; of calcareous ring 

 in Holothuria nigra, 566 ; in Holo- 

 thuroidea, 567, 569 ; in Elasipoda, 569 ; 

 in Molpadiida, 569 ; in Dendrochirota, 

 569 ; of calyx in Antedon rosacea, 582, 

 584, 585 ; in Crinoidea, 588 ; in 

 Hyocrinus, 588, 590 ; in Rhizocrinidae, 

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

 Pentacrinus, 588, 591 ; in Holopus, 

 592 ; in Blastoidea, 599 ; development, 

 in Antedon rosacea, 619 f. 



Radiolaria, 49, 50, 75 f. ; 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 

 ( = Zooxanthella) 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, 324 



Radius, of Echinus esculentus, 503 ; 



synonym of compass, 526 ; of a Holo- 



thuroid, 562 ; of Spatangoidea, 553 ; of 



. Antedon rosacea, 582 ; of PromacJw- 



crinus, 594 



Rain, bloody, 125 



Rainey's tubes, 108 



Ramulina, 59 



Raphidiophrys, 71, 74 



Raspailia, 225 



