TABLE OF CONTENTS. 



CHAPTER I. 



PAGE 



PHYLUM PROTOZOA ... 1 



Class I. GYMNOMYXA 



(SARCODINA) 3 



Sub-class 1. RHIZOPODA . 6 



Order 1. Amoeboidea . .11 



,, 2. Testacea . .11 



Sub-class 2. MYCETOZOA . 15 



., 3. HELIOZOA . .18 



,, 4. RADIOLARIA . 20 



Class II. INFUSORIA . . 24 



Sub-class 1. MASTIGOPHOKA . 27 



Order 1. Flagellata . . 27 



Sub-order 1. Monadina . 30 



,, 2. Euglenoidea . 30 



,, 3. Heteromastigoda, 31 



,, 4. Isomastigoda . 31 



,, 5. Phytomastigodn 32 



Order 2. Choanoflagellata . 32 



3. Dinoflagellata . 33 



,, 4. Silicoflagellata . 35 



,, 5. Cystoflagellata . 35 



Sub-class 2. CILIATA . . 37 



Order 1. Gymnostomata . 45 



,, 2. Trichostomata . 46 



Sub-order 1. Aspirotricha . 46 



,, 2. Spirotricha . 48 



a. Heterotricha . 48 



b. Oligotricha . 49 



c. Hypotricha . 49 

 cl. Peritricha . 50 



Sub-class 3. ACINETARIA . 51 



Class III. SPOROZOA . . 54 



Order 1. Gregarinida . . 56 



CHAPTER I. PROTOZOA contd. 



PAGE 



Sub- order 1. Monocystidea . 59 



,, 2. Polycystidea . 59 



Order 2. Coccidiidea . . 59 



3. Haemosporidia . 61 



Sub-order 1. Drepanidiidia 61 



,, 2. Acystosporidia 62 



Order 4. Myxosporidia. . 64 



., 5. Sarcosporidia . . 68 



CHAPTER II. 

 THE METAZOA . 



CHAPTER III. 



70 



PHYLUM PORIFERA . . . 72 



Class I. CALCAREA . . 89 



Order 1. Calcarea . . 89 



Sub-order 1. Homocoela . 89 



,, 2. Heterocoela . 90 



Class II. TRIAXONIA . . 90 



Order 1. Hexactinellida . 90 



Sub-order 1. Lyssacina . 92 



,, 2. Dictyonina . 93 



Order 2. Hexaceratina . . 93 



Class III. DEMOSPONGIAE . 93 



Order 1. Tetractinellida . 93 



Sub-order 1. Choristida . 93 



2. LUMstida . 94 



Order 2. Carnosa . . .95 



,, 3. Monaxonida . . 95 



Sub-order 1. Halichondrina 95 



,, '2. Spintharophora 97 



Order 4. Ceratina 97 



