X Contents. 



CHAPTER VII. 



Page. 

 Distribution of Animals. — Primaiy classification, . . . -42 



CHAPTER VIII. 



Sub-lvingdom I. — Protozoa. — Class I, Monera; Order i, Gymno- 

 monera; Order 2, Lepomonera. Class 2, Labyrinthuleae. 

 Class 3, Rhizopoda ; Order i, Tmperforata ; Order 2. 

 Perforata. Class 4, Flagellata ; Order i, IMonadina ; 

 Order 2, Noctilucse. Class 5, Protoplasta; Order i, 

 Catallacta ; Order 2, Amoebina ; Order 3, Heliozoa, . . 49 



CHAPTER IX. 



Class 6, Radiolaria; Order i, Monocyttaria ; Order 2, Poly- 



cyttaria. Class 7, Gregarinina, 60 



CHAPTER X. 



Class 7, Infusoria; Order i, Opalineae ; Order 2, Peridiniita; 



Order 3, Acinetina ; Order 4, Stomatoda, . . . .66 



CHAPTER XI. 



Sub-kingdom II. — Polystomata or Porifera ; Order i, Halisarcia ; 

 Order 2, Ceraospongia ; Order 3, Gummineae; Order 4, 

 Halichondrise ; Order 5, Corticatse Order 6, Acantho- 

 spongia ; Order 7, Potamospongia ; Order 8, Calcispongia, . 72 



CHAPTER XII. 



Sub-kingdom III. — Coelenterata. Class i, Hydrozoa; Sub-class i, 



Hydroida ; Order i, Eleutheroblastea, 79 



CHAPTER XIII. 



Order 2, Gymnoblastea, ......... 84 



CHAPTER XIV. 



Order 3, Calyptoblaitea ; Order 4, Monopsea, 93 



