338 THE HISTORY AND SCOPE OF ZOOLOGY IX 



Class II. APODES. 



Orders : Nemertini, Turbellarii, Trematodes, and 

 HirudineL 



III. ClLIATI. 



Orders : Bryozoa and Rotifera. 

 IV. ANNELIDES. 



Orders : Nematodes, Lumbricini, and Branchiati. 

 Type 4. Arthropoda. 

 Class I. CRUSTACEA. 



Orders : Entomostraca and Malacostraca. 

 II. INSECT A. 



Orders : Myriapoda, Arachnida (Accra, Latr.), and 



Hexapoda. 



Type 5. Mollusca. 

 Class I. TUNICATA. 



Orders : Ascidice and Salpce. 



II. ACEPHALA. 



Orders : Lamellibranchiata and Brachiopoda-. 

 III. GASTEROPODA. 



Orders : Heterobranchia, Dermatobranchia, ffetero- 

 poda, Ctenobranchia, Pulmonata, and Cyclo- 

 , :. .branchia. 

 ,, IV. CEPHALOPODA. 

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



The classification given by Henri Milne-Edwards - 1 

 is as follows : 



Branch I. Osteozoaria or Vertebrata. 



Sub-Branch i. Allantoidians. 

 Class I. MAMMALIA. 



Orders : (a) Monodelphia : Bimana, Quadru- 

 mana, Cheiroptera, Insectivora, Rodentia, 

 Edentata, Carnivora, Amphibia, Pachyder- 

 mata, Ruminantia, Cetacea ; (b) Didelphia : 

 Marsupialia, Monotremata. 

 II. BIRDS. 



Orders : Rapaces, Passeres, Scansores, Gallimv, 



Grallce, Palmipedes. 

 III. REPTILES. 



Orders : Chelonia, Sauria, Ophidia. 



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



