xxxviii CLASSIFICATION OF THE ANIMAL KINGDOM 

 PHYLUM XI. MOLLUSC A. 



Class I. PELECYPODA. 



Order 1. PROTOBRANCHIA. 



,, 2. FlLIBRANCHIA. 



,, .3. PSEUDO-LAMELLIBRANCHIA. 



,, 4. EULAMELLIBRANCHIA. 



Sub-order a. Inteyripalliata. 



,, b. Sinupalliata. 

 Order 5. SEPTIBRANCHIA. 



Class II. AMPHINEURA. 

 Order 1. PLACOPHORA. 



,, 2. APLACOPHORA. 

 Class III. GASTEOPODA. 

 Sub-class I. Streptoneura. 

 Order 1. ASPIDOBRAXCHIA. 

 Sub-order 1. Docoglossa. 

 ,, 2. Rhipidoglofisa. 



Order 2. PKCTIXIBKAN< 11 1.\. 

 Sub-order 1. Platypoda. 

 ,, 2. H<t< ro/x><]<i. 

 Sub-class II. Euthyneura. 

 Order 1. OPIS-THOBRANCHIA. 

 Sub-order 1. 

 ,, 2. 

 Order 2. PULMONATA. 



Appendix to the Gastropoda Class 

 SCAPHODA and RHODOPE. 



Class V. CEPHALAPODA. 

 Sub-class I. Dibranchiata. 

 Order 1. DECAPODA. 

 ,, 2. OCTOPODA. 

 Sub-class II. Tetrabranchiata. 



PHYLUM XII. CHORDATA. 



SUB-PHYLUM I. ADELOCHORDA. 

 Class ADELOCHORDA. 



SUB-PHYLUM II. UROCHORDA. 



Class UROCHORDA. 



Order 1. LARVACEA. 

 ,, 2. THALIACEA. 

 Sub-order a. Cydomyaria. 

 ,, b. Hemimyaria. 

 , , c. Pyrosomata. 

 Order 3. ASCIDIACEA. 



Sub-order a. Asciduv simplices. 

 ,, b. Awidiw compo*it>. 



SUB-PHYLUM III. EUCHORDA. 

 Section I. Acrania. 



Section II. Craniata.. 



lassl. CYCLOSTOMATA. 



Order 1. PETROMYZONTES. 

 ,, 2. MYXINOIDEI. 



Oass II. PISCES. 1 ^ 



Sub-class I. Elasmobranchii. 

 Order 1. CLADOSELACHII. 

 ,, 2. PLEURACANTHKI. 

 ,, 3. ACANTHODEI. 

 ,, 4. SELACHII. 



Sub-order a. Proto#e?(ti-hii. 



,, b. Euxtlachii. 

 Section a. Sqnalida. 

 ,, )8. Raj id a. 



Sub-class II. Holocephali. 

 ,, III. Teleostomi. 



Order 1. CfcOBSOFTBBYGII. 



,, 2. CHONDROSTEI. 

 ,, 3. HOLOSTEI. 

 ,, 4. TELEOSTEI. 

 Sub-order a. Phy*o*toini. 



, , b. A nacanth in i. 



,, c. AcanthopterL 



,, d. Pharyngognathi. 



,, t. Plectoynafhi. 



,, f. Lophohn i in-hit. 



Sub-class IV. Dipnoi. 

 Order 1. MONOPNEUMONA. 

 ,, 2. DIPNEUMONA. 



Appendix to Pisces The Ostracodermi, 



Class III. AMPHIBIA. 

 Order 1. URODELA. 

 ,, 2. AXFRA. 

 ,, 3. GYMNOPHIOXA. 

 4. STEGOCEPHALA. 



