TABLE OF CONTENTS 



CHAPTER I 



i 

 PHYLUM TUNICATA .... 



Order 1. Ascidiacea. . . 



Tribe 1. Ascidiae simplices 



(Monascidia) . . 



_'. Ascidiae composi- 



tae (Synascidia) 



3. Ascidiae Salpae- 



formes (Asc. 



25 



n 



Order 3. Appendiculariae . 60 



< HAPTER II 



PHYLUM ENTEROPNEUSTA . 66 



Order 1. Balanoglossida . 68 



2. Cephalodiseida . 104 



(HAPTER III 



PHYLUM ECHINODERMATA . 115 



Class I. ASTEROIDEA . . 166 



Order 1. Encrinasteriae . . 188 



2. Euasteriae. . . 189 



Sub-order 1. Phunerozonia 189 



2. Cryptozonia . 191 



Class II. OPHIUROIDEA . 194 



Order 1. Lysophiurae . . 205 

 .. 2. Zygophiurae 



(Ophiurae) . . .205 



3. Streptophiurae . 206 

 ., 4. Cladophiurae 



(Euryalae) . . .207 



PAGE 



Class III. ECHIXOIDEA . 208 



Order 1. Palaechinoidea . 238 



2. Euechinoidea . . 239 



Sub-order 1. Cidaroida . 239 



2. Diaiematoidfi 239 



Section 1. Streptosomata .240 



2. Stereosomata . . 240 



Sub-order 3. Holectypoida . 242 

 4. Clypeastroida 243 

 5. Spatangoida . 244 



Section 1. Asternata . . 245 

 2. Sternata . . 245 



Class IV. HOLOTHUROI- 



DEA . . .247 

 Order 1. Actinopoda . . 265 



Sub-order 1. A*pidochiro- 



tae . . . .266 

 2. Dendrochiro- 



toe .... 268 



Order 2. Paractinopoda . . 269 



Class V. CRIXOIDEA . . 270 



Order 1. Larviformia . . 293 



2. Fistulata . . .293 



3. Camerata . . . 295 



4. Flexibilia . . .297 



5. Articulata . . 298 



Class VI. CYSTIDEA. . . 303 



Order 1. Amphorida . . 309 



2. Rhombifera . . 309 



3. Diploporida . . 309 



4. Edrioasterida . . 310 



Class VII. BLASTOIDEA . 310 



CHAPTER IV 

 PHYLUM ARTHROPODA . . 314 



