Richard Sternfeld Die Reptilien und Amphibien mitteleuropas Leipzig, Quelle & Meyer, 1912. In German 80 pages illustrated with 30 coloured plates.
Ichthyosaura alpestris (Laurenti, 1768)
Date 1912
Source https://archive.org/stream/diereptilienunda00ster/#page/n140/mode/1up
Author Harder
Source: https://commons.wikimedia.org/wiki/File:DieReptilienAmphibienMitteleuropasPlate27.jpg

The alpine newt (Ichthyosaura alpestris) is a newt of the family Salamandridae. It was formerly known as Triturus alpestris and Mesotriton alpestris. Alpine newts were originally confined to Central Europe and mountainous Southern Europe, as well as having isolated populations on the northern Iberian Peninsula and in Italy.