Xll CONTENTS. 



CHAPTER XXVI. 



f 



Nematelmia Acanthocephala Gordiacea Nematoda Parasitic 



Nematoids Free Nematoids, 168-172 



CHAPTER XXVII. 



Rotifera General characters of the Rotifera Affinities of the Roti- 



fera, 172-176 



CHAPTER XXVIII. 



Annulosa General characters of the Annulosa General characters 

 of the Anarthropoda Class Gephyrea General characters of the 

 class Annelida, 177-181 



CHAPTER XXIX. 



Divisions of the Annelida Hirudinea Oligochseta Tubicola 

 Errantia Distribution of the Annelida in time Tabular view 

 of the Annelida Class Chaetognatha, . 181-189 



CHAPTER XXX. 



Arthropoda General characters Divisions of Arthropoda, . 190-191 



CHAPTER XXXI. 



Crustacea Characters of the class Crustacea General morphology of 



Crustacea Divisions of Crustacea, 191-198 



CHAPTER XXXII. 



Epizoa Ichthyophthira Cirripedia Characters of Cirripedia De- 

 velopment Reproduction Divisions, .... 198- 



204 



CHAPTER XXXIII. 



Entomostraca Lophyropoda Ostracoda Copepoda Branchio- 

 poda Cladocera Phyllopoda Trilobita Merostomata 

 Xiphosura Eurypterida, ....... 204-211 



CHAPTER XXXIV. 



Malacostraca Edriophthalmata Lsemodipoda Amphipoda Iso- 

 poda Podophthalmata Stomapoda Decapoda Macrura 

 Anomura Brachyura, ...... .211-218 



CHAPTER XXXV. 



Distribution of the Crustacea in space Distribution of the Crustacea 



in time, ...... .... 219-220 



CHAPTER XXXVI. 

 General characters and divisions of the Arachnida, . . . 221-224 



