Among the batrachians found in Mexico is the curious axolotl, which
frequents the great lake on which the chief city is built, as well as
numerous other lakes, some at a considerable elevation above the ocean.
It is between eight and ten inches long, of rather a dark greyish-brown
colour, thickly covered with black spots. Those who have seen a newt in
its larva state, may form a correct idea of the gills which project from
either side of the head.
Naturalists differ in opinion as to whether it is really an adult
batrachian, or merely the larva of some much larger creature. In many
localities it is very plentiful; and the flesh being eatable and of a
delicate character, the creature is sold in great numbers in the
markets.
Being furnished with both kinds of respiratory organs, it can breathe
equally well on land or in the water. It has a broad, flat head, blunt
nose, and eyes situated near the muzzle. Though living so much in the
water, its toes are not connected by intermediate membranes--indeed,
they appear only to be intended for service on shore--its tail, nearly
as long as its body, serving as a propeller in the water.