xiv Contents. 



\ CHAPTER XL. 



Page. 

 Sub-class I, Cirripedia ; Order i, Thoracica ; Order 2, Abdo- 



minalia ; Order 3, Apoda ; Order 4, Rhizocephala, . . . 343 



CHAPTER XLI. 



Sub-class 2, Copepoda; Order i, Gnathostomata ; Order 2, Sipho- 

 nostomata. Sub-class 3, Ostracoda. Sub-class 4, Bran- 

 chiopoda; Order i, Cladocera; Order 2, Phyllopoda. Sub- 

 class 5, Trilobitse, 346 



CHAPTER XLH. 



Sub-class 6, Poecilopoda. Sub-class 7, Podophthalmia ; Order I, 



Decapoda ; Order 2, Stomapoda, 351 



CHAPTER XLHI. 



Sub-class 8, Edriophthalmia ; Order i, Cumaceae ; Order 2, Lsemo- 



dipoda ; Order 3, Amphipoda ; Order 4, Isopoda, . . . 358 



CHAPTER XLIV. 



Division 2, Tracheopnoa. Class 2, Arachnoidea. Sub-class i, 

 Pseudarachna ; Order i, Pantopoda ; Order 2, Tardigrada. 

 Sub-class 2, Autarachna ; Order i, Acarina; Order 2, Ara- 

 neina ; Order 3, Arthrogastra, 363 



CHAPTER XLV. 



Class 3, Myriopoda; Order i, Chilognatha ; Order 2, Chilopoda ; 



Order 3, Pauropoda, 377 



CHAPTER XLVI. 



Class 4, Insecta, 383 



