In 1799' Alexandre Brongniart pointed out the Wide differences which separate the frogs and salamanders (which he terms Batrachia) from the other reptiles; and in 1804 P. A.
Latreille,2 rightly estimating the value of these differences, though he was not an original worker in the field of vertebrate zoology, proposed to separate Brongniart's Batrachia from the class of Reptilia proper, as a group of equal value, for which he retained the Linnaean name of Amphibia.
The latter are Brongniart's Batrachia, plus the Caeciliae, whose true affinities had, in the meanwhile, been shown by A.
Merrem's Pholidota and Batrachia (1820), F.
Gray; but Dumeril and Bibron in their great work,' and Dr Gunther in his Catalogue, in substance, adopted Brongniart's arrangement, the Batrachia being simply one of the four orders of the class Reptilia.
Huxley, in the ninth edition of this Encyclopaedia, treated of Brongniart's Batrachia, under the designation Amphibia, but this use of the word has not been generally accepted.
(See BATRACHIA.) (T.
Cope, "Batrachia of North America," Bull.
Parasitic in batrachia: T.