Boulenger, "A Synopsis of the Tadpoles of the European Batrachians," P.Z.S., 1891, p. 593; F.
Flower, "Batrachians of the Malay Peninsula and Siam," P.Z.S., 1899, p. 885; H.
Ferguson, "Travancore Batrachians," J.
The batrachians include a very large number of genera and species, especially in the Amazon valley.
1 The anatomical error in reference to the auricles of Reptiles and Batrachians on the part of Linnaeus is extremely interesting, since it shows to what an extent the most patent facts may escape the observation of even the greatest observers, and what an amount of repeated dissection and unprejudiced attention has been necessary before the structure of the commonest animals has become known.
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