Xviii DESCRIPTION OP COLOURED PLATES. 



of the endochrome, and introduce some new forms, described by 

 E. G. Lobb and W. Archer, Quar. Jour. Micro. Sci. vol. v. 1865, 

 p. 255 : and 38, 40 to illustrate diatom circulation. 



PLATE ILL— Page 376. 



PROTOZOA — RHIZOPODA. 



F : ys. 43, 44, 45, 46, 4T, 48, 49, 50, 51, 52. These figures are from diagrams by 

 Major Owen, to illustrate a paper given in Jour. Linn. Soe. vol. viii. p. 202. 

 They illustrate forms of living Polycystic, sketched from life by Major 

 Owen, and show the richly coloured appearance of the sarcode ; figs. 48 to 52 

 — 53. Monocystis lumbricorum, round form— 54. Monocystis lumbricorum, 

 the usual elongated shape— 55. Monocystis serpuhe— 56. Gregarina Sie- 

 boldii ; illustration of septate form, with retlexed hook-like processes— 

 57. Monocystis lumbricorum, encysted — 58. Monocystis luiubricorum, 

 more advanced and pseudo-naviceUee forming —59. Monocystis lumbricorum, 

 free pseudo-navicella of— 60, 61. Monocystis lumbricorum, amoeboid forms 

 of— 62. Cruciate sponge-spicule— 63. Asteromma Humboldtii— 64. Eozoon 

 Canadense, represents appearance of a portion of the natural size— 65. Eo- 

 zoon Canadense, magnified, showing portions of cell-walls left uncoloured, 

 the animal sarcode inhabiting it coloured dark green as in nature, and 

 converted by fossilization into a siliceous mineral : the narrow bands pass- 

 ing between these are processes (stolons) of the same substance— 66. Acti- 

 nophrys Sol, budding— 67. Euglena viridis ; a. contracted, 6. elongated form 

 —68. Acineta tuberosa — 69. fficistes longicornis (Davis). —70. Oxytricha 

 gibba (side view)— 71. Oxytricha pellioneUa —72. Limnias (? n. sp.) — 73. 

 Cyclidium glaucoma— 74. Glaucoma scintillans— 75 to 79, 80 to 85, illustrate 

 forms of Foraminifera found by Major Owen, living— 75. Globigerina (Or- 

 bulina) acerosa, n. sp., broken open to show interior— 76. Globigerina 

 (Orbulina) continens, n. sp. broken open to show interior— 77. Globigerina 

 hirsuta— 78. Globigerina (Orbulina) universa— 79. Globigerina bulloides— 

 80. Conochilus vortieella — 81. Globigerina bulloides— 82. Globigerina in- 

 flata, sinistral shell— 83. Pulvinulina Micheliniana— S4. Pulvinulina Canari- 

 ensis— 85. P. Menardii. 



The figures of recent Polycystina illustrate the surface-fauna of 

 mid-ocean ; the original drawings were made from living specimens, 

 as were those of the Foraminifera ; they well represent in their 

 natural state these elegant and interesting objects. 53 to 61 give 

 some idea of the state of our knowledge of forms and life-history 

 of the Gregarinse. Figures of Infusoria 67, 68, 70, 71, 73, 74 : 

 69, 72, new forms of Rotifera. 



PLATE IV.— Page 511. 



POLYZOA. 



Fig. 86. Hartea elegans— 87. Side view of Synapta spicula— 88. Ophiocomarosula 

 (very immature specimen), a. Claw hooks, b. Palmate spicula. The develop- 

 ment of this creature has been described by G. Hodge, in Transactions of 

 Tyneside Naturalists' Field-Club — 89. Spine of a star-fish, particularly 

 interesting as snowing the reticular calcareous network obtaining in this 

 as in all other hard parts of the Echinodermata — 90. Very minute Spa- 

 tangus, obtained from stomach of a bream : many of the spines are gone, 

 but the structure of the shell is intact and forms a beautiful object, interest- 

 ing in connexion with the source whence obtained— 91. Ophiocoma neglecta ; 

 wriggling or brittle Starfish. The plate does not admit of a figure on a 

 scale sufficient to show the full beauty of this object — 92. Tubularia Du- 

 mortierii— 93. Pedicellaria uiandibulata from Uraster glacialis— 94. Pedi- 



