Classe Amphibia. Ordnung 1. Stegocephali. Unterordnung 1. Lepospondyli. Familie 1. _Branchiosauridæ_ Fritsch. " 2. _Microsauria_ Dawson. " 3. _Aistopoda_ Miall. Unterordnung 2. Temnospondyli. Genera: _Archegosaurus_, _Eryops_, etc. Unterordnung 3. Stereospondyli. Familie 1. _Gastrolepidoti_. " 2. _Labyrinthodonta_. Ordnung 2. Cœciliæ. Ordnung 3. Urodela. Unterordnung 1. Ichthyoidea. Familie 1. _Phanerobranchia_. " 2. _Cryptobranchia_. Unterordnung 2. Salamandrina. Ordnung 4. Anura. Unterordnung 1. Phaneroglossa. Familie 1. _Ranidæ_. " 2. _Bufonidæ_. " 3. _Cystignathidæ_ Cope. " 4. _Pelobatidæ_ Boul. " 5. _Discoglossidæ_ Cope. " 6. _Palæobatrachidæ_ Cope. Lydekker (393) in the next year proposed a system of classification which did not depart widely from that proposed (450) by the committee of the British Association for 1874. Lydekker's classification is as follows: Class Amphibia. Order I. Labyrinthodontia. Suborder 1. Branchiosauria. Family _Protritonidæ_. " _Apateonidæ_. Suborder 2. Aistopoda. Family _Dolichosomatidæ_. Suborder 3. Microsauria. Family _Urocordylidæ_. " _Limnerpetidæ_. " _Hyloplesionidæ_. " _Microbrachidæ_. Suborder 4. Labyrinthodontia vera. Family _Archegosauridæ_. " _Diplospondylidæ_. " _Nyraniidæ_. " _Dendrerpetidæ_. " _Anthracosauridæ_. " _Mastodonsauridæ_. Uncertain family, _Eosaurus_. Order II. Apoda. Order III. Caudata. Family _Hylæobatrachidæ_. " _Sirenidæ_. " _Proteidæ_. " _Amphiumidæ_. " _Salamandridæ_. Order IV. Ecaudata. Family _Discoglossidæ_. " _Pelobatidæ_. " _Palæobatrachidæ_. " _Cystignathidæ_. " _Ranidæ_. In 1890 Döederlein proposed a scheme of classification which is notable on account of the peculiar relations which it expresses between the groups relations which, in reality, do not exist. His classification is as follows: Class Amphibia. Ordnung I. Stegocephali. A. Microsauria. Unterordnung 1. Branchiosauri. Genera: _Branchiosaurus_, _Dawsonia_, _Melanerpeton_, _Pelosaurus_. Unterordnung 2. Sauromorphi. Familie 1. _Hylonomidæ_. " 2. _Nectridæ_. " 3. _Aistopodidæ_. B. Ganocephala. Unterordnung 1. Rhachitomi. " 2. Embolomeri. " 3. Labyrinthodontia. Ordnung II. Urodela. Ordnung III. Gymnophiona. Ordnung IV. Anura.