Description
Salamanders (Caudata), left side: Northern crested newt (Triton cristatus, top-male, bottom female and larva); Olm (Proteus anguinus). Right side: Spotted salamander (Ambystoma maculatum, or Salamandra maculata); Axolotl (Ambystoma mexicanum); Larva of Axolotl (bottom). Wood engravings, published in 1897.