CONTENTS. 



XI 



PART II. SYSTEMATIC. 



CHAPTER VII. 

 THALLOPHYTA. Pp. 116—228. 



I. PERIDINIALES 



II. COCCOSPHERES AND RHABDOSPHERES . 



III. SCHIZOPHYTA 



1. SCHIZOPHYCEAE (Cyaxophyceae) 



Girvanella 124-126. Borings in shells 127-129 

 Zonatrichites 129-130. 



2. SCHIZOMYCETES (Bacteria) 



Bacillus Permicus 135-136. B. Tieghemi and Micro- 

 coccus Guignardi 136. Fossil Bacteria 137-138. 



IV. ALGAE 



Scarcity of fossil algae. Fossils simulating Algae. Re- 

 cognition of fossil algae. Algites dec. 



A. DIATOMACEAE «► . 



Recent Diatoms. Fossil Diatoms. Bactryllium &c. 



B. CHLOROPHYCEAE 



a. Siphoneae 



a. Caulerpaceae 



/3. Codiaceae . . . * . 



Codium 159-160. >Sphaerocodimn 160. Peni- 

 cillus 161. Ovulites 161-164. Halimeda 

 164. 



y. Dasycladaceae 



Acetahidaria 165-166. Acicidaria 166-169. 

 Cymopolia 169-171. Vermiporella 172- 

 173. Sijcidiicm 173. Diplopora 174-175. 

 Oyropoi'ella 175. Dactylopora^ Palaeozoic 

 and Mesozoic Siphoneae 175-1' 

 h. Confervoideae .... 



INCERTAE SEDIS .... 



Boghead 'Coal.' lieinschia 180-181. Pil<t 181-182. 



V. RHODOPIIYCEAE .... 

 Corallinaceae .... 



Lithothamnion 185 189. f^olcnopora 189-190. 



PAGE 



117-118 

 118-121 

 121-138 

 122-132 



132-1.38 



138-205 



150-156 



156-178 

 157-177 

 157-159 

 159-164 



164-177 



