classification of, [279];
diagram of affinities of principal groups, [282];
affinities to Mammalia, [303], [309]
Respiration, mode of, in Chelonia, [331];
assisted by anal sacs, [330]
Respiratory organs, of Amphibia, [40]
Rhachiodontinae, [622]
Rhacophorus, [151], [186], [238], [241], [244], [246];
Rh. leucomystax, [247];
tadpoles, [249];