The genus Siren, consisting of eel-like Batrachians with two anterior feet and permanent branchiæ, inhabits the South-Eastern States of North America from Texas to Carolina.
Family 3.—PROTEIDÆ. (2 Genera, 4 Species.)
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| Neotropical Sub-regions. | Nearctic Sub-regions. | Palæarctic Sub-regions. | Ethiopian Sub-regions. | Oriental Sub-regions. | Australian Sub-regions. |
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The Proteidæ have four feet and persistent external branchiæ. The two genera are,—Proteus (1 sp.), found only in caverns of Central Europe; and Menobranchus, which are like newts in form, and inhabit the Eastern States of North America.
Family 4.—AMPHIUMIDÆ. (1 Genus, 2 Species.)
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| Neotropical Sub-regions. | Nearctic Sub-regions. | Palæarctic Sub-regions. | Ethiopian Sub-regions. | Oriental Sub-regions. | Australian Sub-regions. |
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The genus Amphiuma, or Murænopsis, consists of slender eel-like creatures with four rudimentary feet, and no external branchiæ. The species inhabit the Southern United States from New Orleans to Carolina.
Family 5.—MENOPOMIDÆ. (2 Genera, 4 Species.)
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| Neotropical Sub-regions. | Nearctic Sub-regions. | Palæarctic Sub-regions. | Ethiopian Sub-regions. | Oriental Sub-regions. | Australian Sub-regions. |
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There are large Salamanders of repulsive appearance, found only in Eastern Asia and the Eastern United States. The genera are,—Sieboldia (2 sp.), Japan and north-west China; Menopoma = Protonopsis (2 sp.), Ohio and Alleghany rivers.