XV111 DESCEIPTION OF 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 III. Page 376. 



PROTOZOA EHIZOPODA. 



Figs. 43, 44, 45, 46, 47, 48, 49, 50, 51, 52. These figures are from diagrams by 

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

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

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

 63. Monocystis lumbricorum, round form 54. Monocystis lumbricorum, 

 the usual elongated shape 55. Monocystis serpulae 56. Gregarina Sie- 

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

 57. Monocystis lumbricorum, encysted 58. Monocystis lumbricorum, 

 more advanced and pseudo-naviceUae 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 fossilisation into a siliceous mineral : the narrow bands pass- 

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

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

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

 gibba (side view) 71. Oxytricha pellionella 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 vorticella 81. Globigerina bulloides 82. Globigerina in- 

 flata, sinistral shell 83. Pulvinulina Micheliniana 84. 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 Kotifera. 



PLATE IV. Pagebll. 



Fig. 86. Hartea elegans 87. Side view of Synapta spicula 88. Ophiocoma rosula 

 (very immature specimen), a. Claw hooks, fe. 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 showing 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 . Ophiocorna 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 maudibulata from Uraster glacialis 94. Pedi- 



