Iris, colour of, in Chelonia, [329]

Ixalus, [238], [241]

Jaw, lower, of Salamandra, [17];

of Urodela, [18];

of Anura, [30]

Keller, quoted, [571] n.

Keraterpeton, [81], [288];

K. crassum, [81]

Kidneys of Amphibia, [48] f., [49]

Klinckowstroem, on Pipa, [149]