338 THE HISTORY AND SCOPE OF ZOOLOGY IX 



Class II. Apodes. 



Orders : Femertmi, Turhellarii, Trematodes, and 

 Hirudi7iei. 



„ III. ClLIATI. 



Orders : Bryozoa and Rotifera. 

 „ IV. Annelides. 



Orders : Nematodes^ Lumbricini, and Branchiati. 



Type 4. Arthropoda. 



Class I. Ceustacea. 



Orders : Entomostraca and Malacostraca. 

 „ II. Insecta. 



Orders : Myricq^oda, Arachnida {Acera, Latr.), and 

 Rexajyoda. 

 Type 5. Mollusca. 



Class I. TUNICATA. 



Orders : Ascidice and Salpce. 



„ II. ACEPHALA. 



Orders : Lamellihranchiata and Brachioj)oda. 

 „ III. Gasteropoda. 



Orders : Heterobrancliia^ Dermatohrcmchia^ Hetero- 

 poda, Ctenohranchia, Pulmonata, and Cydo- 

 hrancJiia. 

 „ IV. Cephalopoda. 

 Type 6. Vertebrata. (Not specially dealt with.) 



The classification given by Henri Milne-Edwards ^ 

 is as follows : — 

 Branch I. Osteozoarla or Vertebrata. 



Sub-Branch 1. Allantoidlans. 

 Class I. Mammalia. 



Orders : (a) Monodelphia : Bimana, Quadrii- 

 mana, Cheiroptera, Insectivora, Bodentia, 

 Edentata, Carnivora, Amphibia, Pachyder- 

 mata, Ruminantia, Cetacea ; (b) Didelphia : 

 Marsupialia, Monotremata. 

 „ 11. Birds. 



Orders : Rajxices, Passeres, Scansores, Gallince, 

 Grallce, Palmipedes. 

 „ III. Reptiles. 



Orders : Chelonia, Sauria, Ophidia. 



1 Corns Elementaire d'Histoire Naturelle, Paris, 1855. 



