Subclass Dipnoa. Order Ganocephala (extinct). Genera: _Archegosaurus_, _Dendrerpeton_, etc. Order Labyrinthodontia. Genera: _Labyrinthodon_, _Rhombopholis_, etc. Order Batrachia. Suborder Ophiomorpha. Family: Cœcilidæ. Suborder Ichthyomorpha. Family: Proteidæ, Salamandridæ. Suborder Theriomorpha (Anura). Family 1. _Aglossa._ Family 2. _Ranidæ._ Family 3. _Hylidæ._ Family 4. _Bufonidæ._ Haeckel the same year proposed (312) an entirely different scheme of classification nd in some respects more acceptable than Owen's. Haeckel's classification is as follows: Class Amphibia. Subclass I. Phractamphibia. Ordnung i. Ganocephala. Genera: _Archegosaurus_, _Dendrerpeton_, _Raniceps_. Ordnung 2. Labyrinthodonta. Genera: _Baphetes_, _Zygosaurus_, _Mastodonsaurus_, _Trematosaurus_, _Capitosaurus_. Ordnung 3. Peromela. Subclass II. Lissamphibia. Ordnung i. Socobranchia. Genera: _Siren_, _Proteus_, _Menobranchus_, etc. Ordnung 2. Sozura (Caudata). Genera: _Cryptobranchus_, _Triton_, _Salamandra_. Ordnung 3. Anura (Ecaudata). Families: _Aglossa_, _Bufonidæ_, _Ranidæ_. This classification is further elaborated in the edition of 1895. Cope in 1868 proposed (110) the scheme of classification which was in use for some time, although it has since suffered some change. His classification follows: Batrachia. Order 1. Trachystoma. Order 2. Proteida. Order 3. Urodela. Order 4. Gymnophiona. Order 5. Stegocephali. Suborder Xenorhachia. _Amphibamus grandiceps_ Cope. Suborder Microsauria. Genera: _Pelion_ Wyman, _Hylonomus_ Dawson, _Pariostegus_ Cope, _Dendrerpeton_ Owen, _Hylerpeton_ Owen, _Brachydectes_ Cope, _Sauropleura_ Cope, _Œstocephalus_ Cope, _Molgophis_ Cope. Suborder Labyrinthodontia. Genera: _Dictyocephalus_ Leidy, _Centemodon_ Lea, _Baphetes_ Owen, _Eupelor_ Cope. Huxley in 1869 proposed (335) the following classification, which does not differ essentially from that proposed in 1863: Amphibia. Order 1. Urodela. Order 2. Batrachia. Order 3. Gymnophiona. Order 4. Labyrinthodontia. Suborder Archegosauria. Suborder Mastodonsauria. The next classification of the extinct Amphibia of any importance was that devised by the committee (450) for the British Association in 1874. This committee was formed of Huxley, Harkness, Henry Woodward, Thompson, and Brigg, with Miall as secretary. This classification is, however, too cumbersome and has never come into general use, and indeed none but English authors have paid it a great deal of attention, although the contribution was a valuable one. The group Aistopoda, which was the ninth group proposed by the committee, has generally been accepted as the group represented by the snake-like forms. The committee's classification follows: