194 ESSAY ON CLASSIFICATION. Part I. 



tinual uniform series to embrace all animals, between the links of which it was 

 supposed there were no unequal intervals. The watchword of their school was : 

 Natura uon facit saltiun. They called their system ki chaine des etres. 



The views of Cuvier led him to the following arrangement of the animal 

 kingdom : — 



CLASSIFICATION OF CUVIER.' 



First Branch. Animalia Vertebrata. 



Cl. 1. Mammalia. Orders: Bimana, Quadrumana, Carnivora, Marsupialia, Rodentia, Eden- 

 tata, Pachydermata, Ruminantia, Cetacea. 



Cl. 2. Birds. Ord. Accipitres, Passeres, Scansores, Gallina?, GralliE, Palmipedes. 



Cl. 3. R e p t i 1 i a . Ord. Chelonia, Sauria, Ophidia, Batrachia. 



Cl. 4. Fishes. \st Series: Fishes proper. Ord. Acanthopterygii ; — Abdominales, Sub- 

 brachii, Apodes ; — Lophobranchii, Plectognathi ; 2d Series : Chondropterygii. 

 Ord. Sturiones, Selachii, Cyclostomi.'^ 



Second Branch. Animalia Mollusca. 



Cl. 1. Cephalopoda. No subdivisions into orders or families. 



Cl. 2. P t e r o p o d a . No subdivisions into orders or families. 



Cl. 3. Gasteropoda. Ord. Pulmonata, Nudibranchia, Inferobranchia, Teetibranchia, Hetero- 



poda, Pectinibranchia, Tubulibranchia, Scutibranchia, Cyclobranchia. 

 Cl. 4. Acephala. Ord. Testacea, Tunicata. 

 Cl. 5. B r a c h i o p o d a . No subdivisions into orders or families. 

 Cl. 6. C i r r h o p o d a . No subdivisions into orders or families. 



Third Branch. Animalia Articulata. 



Cl. 1. Ann el ides. Ord. Tubicolae, Dorsibranchi^, Abranchial. 



Cl. 2. Crustacea. 1st Section: Malacostraca. Ord. Decapoda, Stomapoda, Amphipoda, 



Lremodipoda, Isopoda. 2d Section: Entomostraca. Ord. Branchiopoda, Poecilopoda, 



TrilobitEe. 

 Cl. 3. A r a c h n i d e s . Ord. Pulmonaria?, Tracheariae. 

 Cl. 4. Insects. Ord. Myriapoda, Thysanura, Parasita, Suctoria, Coleoptera, Orthoptera, 



Hemiptera, Neuroptera, Hymenoptera, Lej^idoptera, Rhipiptera, Diptera. 



Fourth Branch. Animalia Radiata. 



Cl. 1. Echinoderms. Ord. Pedicellata, Apoda. 



Cl. 2. Intestinal Worms. Ord. Nematoidea, (inch Epizoa and Entozoa,) Parenchymatosa. 



Cl. 3. A c a 1 e p h a e . Ord. Simplices, Hydrostaticse. 



Cl. 4. Polypi. (Including Anthozoa, Hydroids, Bryozoa, Corallinne, and Spongise.) Ord. 



Carnosi, Gelatinosi, Polypiarii. 

 Cl. 5. Infusoria. Ord. Rotifera and Homogenea, (including Polygastrica and some Algaj.) 



' Le R^Rne nnimal distribue d'aprcs son orfi;anisation, Paris, gone, compare his Tableau tflc'mentaire, q. a., p. 192, his paper, 



1829, 2de e'dit. 5 vols. 8vo. The chvsses of Crustacea, Arach- q. a., p. 193, and the first edition of the Regne animal, published 



nids, and Insects have been elaborated by Latrcille. For the in 1817, in 4 vols. 8vo. 



successive modifications the classification of Cuvier has under- - Comp. Rogn. Anini., 2de e'dit., 2d vol., p. 128 and 383. 



