XVlll DESCRIPTION OF COLOURED PLATES. 



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

 "W. Archer, Qua7\ Jour. Micro. Sci. vol. v. 1865, p. 255 : and 38, 40 

 to ilhistrate diatom circulation. 



PLATE HI.— Page 376. 



PROTOZOA — RHIZOPODA. 



Figs. 48, 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. 20'i. 

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

 Owen, and show the richly coloured aj)pearance of ihe sarcode ; figs. 48 to 52 

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

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

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

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

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

 free pseiulo-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 sai'code 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, b. elongated form 

 — 68. Acineta tuberosa — 69. CEcistes 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. Pulvinidina Canari- 

 ensis — 85. P. Menardii. 



The figures of recent Polycystina illustrate the surface-fauna c^f 

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

 as were those of ihe 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 Gregarinffi. Figures of Infusoria 67, 68, 70, 71, 73, 74 : 

 69, 72, new forms of Kotifera. 



PLATE IY.—Paff€ 5n. 



POLYZOA. 



Fig. 86. Hartea elegans— 87. Side view of Synapta spiciila— 88. Ophiocomarosiiia 

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

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

 Tyncsidc 'SatwruUsts' FicId-Club — 8!>. Spine of a star-fish, particularly 

 interesting as showing the reticular calcareous network obtaining in tliis 

 as in all other hard parts of the Echinodcrmata — 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 conn(!xion with the source whence obtained — 91. Ophiocoma neglecta : 

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

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

 mortierii— 93. Pedicellaria mandlbuluta from Urastcr glacialis - 94. Pedi- 



