DESCRIPTION OF THE ENGRAVINGS. 



NOTE.— The figures represent magnified views ; the generic and specific characters will 

 be found in Part III, by reference to the index. 



PLATE I. 



Group 1. 

 2. 



Cluster 3. 



Figui-es 7 

 12 

 15 



Group 18. 

 19. 

 20. 



Figures 21, 

 24, 

 26, 



Group 29. 



Figures 30 

 34. 

 35 

 38 

 43. 

 44 

 47. 

 48, 

 50, 



Mod as crepusculum 



pimctum 



andfigs. 4, 5,6, Uvella glaucoma 



to 11. Poly toma Uvella 



to 14. Microglcna monadina 



to 17. Glenomorum tingeus 



Doxococcus ruber 



Chilomonas paramecium 



Bodo intestinalis 



22, 23. Cryptomonas ovata. 



25. Proroceutrum micaus 



27, 28. Lagenella euchlora 



Cryptoglena conica 



to 33 Traclielomonas Yolvocina 



Gyges granulum 



to 37. Paudoiina morum 



to 42. Gonium pectorale 



.'' tranquillum 



to 46. Syncrypta vol vox 

 Eudorina elegans 

 4 9 . Sphacrosira vol vox 

 5 1 . Sy nura uvella 



Group 52. 

 Figures 53, 



55 

 Group 58. 



59. 

 Figure 60. 



61. 



62. 



63 



66. 

 Group 67. 

 Figure 68. 



69. 



70. 



71 

 Group 74. 

 Figui-es75, 



77. 

 Group 78. 



79. 



80. 



Chlamidomonas pulvisculus 



54. Uroglcna volvox 

 to 57. Volvox globator 

 Bacterium triloculare 

 Vibrio bacillus 

 Spii-ochaeta pHcatilis 

 Spirillum undula 

 Spirodiscus fulvus 

 to 65. Closterium acerosum 



turgidum 



setaoemn 



Astasia haematodes 



pusilla 



Amblyophis viridis 



to 73. Euglena sanguinea 



76. 



pyrum 

 longicauda 

 triquetra 

 acus 



Clilorogonium eucliloram 

 Colacium ^ vesiculosum 



Group 81. Distigma proteus 

 82. Epipyxis utriculus 



Figiu-esSS, 84. Dinobryon sertularia 

 85 to 87. Anneba princcps 



88, 88* radiosa 



89 to 91. Difflugia proteiform^is 



92 to 94. Arcclla aculcata 



95 to 98. Cyphidium aureoliun 



Group 99. Desniidium hexaceros 



Figs- 100, 101. Staurastrum ililatatum 

 102, 103. -^ paradoxum 



104. Pcntastcrias margaritacca 



105, 106. Tcs.sarthra moniliformis 

 107. Odontella .' filiforniis 



JOS, dcbuiidium 



PLATE II. 



Figs. 



109. Xanthidium aculeatum 



110. furcatum 



111. ■ ? diffoiTue 



112, 113. Artluodesmus convcrgena 



114. Micrastcrias hoptactis 



115, 116. Boryara 



117, 118. Napoleonia 



119, 120. Microtheca octoceros 

 121 to 123. Euastrum rota 



124. ■ crux melitensis 



125. ■ Ycnticosum 



126. ■ margaritifcrum 



Group 127. Pyxidicula opcrculata 



Figs. 128. Gallionclla linoata 



129, 130. fcrrugiuca 



