. The British freshwater Rhizopoda and Heliozoa. sts, and cists proper, in which theorganism maintains a latent existence for longer orshorter periods. The temporary cists, about 2 ju, indiameter, have a transparent membranous envelope,usually colourless, but occasionally light yellow, andwith a double contour. They are generally true cists are spherical; two or three together aresometimes found occupying a common cellulose G. hybyrinthuloides rarely abandons its envelope,G. montana, in its active life, is invariably naked,and when encisted occasionally escapes from i
. The British freshwater Rhizopoda and Heliozoa. sts, and cists proper, in which theorganism maintains a latent existence for longer orshorter periods. The temporary cists, about 2 ju, indiameter, have a transparent membranous envelope,usually colourless, but occasionally light yellow, andwith a double contour. They are generally true cists are spherical; two or three together aresometimes found occupying a common cellulose G. hybyrinthuloides rarely abandons its envelope,G. montana, in its active life, is invariably naked,and when encisted occasionally escapes from its cist(fig. 32), a mass of plasma issuing from an aperture—giving the organism the appearance of a testaceousrhizopod, with amoeboid movements, and emittingfilamentous pseudopodia rather copiously. More fre-quently there is a fragmentation of the contents of thecist, and from 20 to 40 globular secondary cists, about18 ju, in diameter, are liberated, to develop ultimatelyinto living individuals, identical with the parent, butextremely ? Fia. 32.—C. montana. A young individual issuing from its cist; highlymagniiied. After Penard. 10 146 INDEX OF Species, etc., desceibed in Vol. in italics. PAGE PAGE Amxba diffluens Maggi 43 Amoeba ^jmceps Carter 50 guttula Maggi 55 1 princeps Czemy 75 princeps Maggi 44 proteus (Pallas) Leidy . 41 radiosa Maggi 66 var. granulosa Cash . 48 verrucosa Maggi 60 ? proteus Brayl. 75 Amiba Bory . 40 quadrilineata Carter 59 brachiata Dtij. 65 radiosa Ehrenb. 64 diffluens Duj. 43 Bneselii Piitcb. 43 diver gens Boiy 41 JRceselii (?) Cai-ter 43 guttula Duj. 54 sabulosa Leidy 79 Kceselii Orev. 43 striata Penard . 53 Umax Duj. 57 ? striolata Perty 53 MuUeri Bory 42 terricola Greeff 60 princeps Duj. 43 veiTUCosa Uhrenh . 58 radiosa Duj. 65 verrucosa Leidy . 53 BcBselii Bory 41 villosa Wallich 50 verrucosa Duj. 59 villosa Aioher 83 Amceba Ehrenb. 40 villosa Slack . 79 aotinopliora Awerh. 48 vitrea Penard . 68 brachiata Proment. 65 Amcebi
Size: 1812px × 1378px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauth, bookcentury1900, bookdecade1900, bookidcu31924000623961
