. The Canadian field-naturalist. The Canadian Field-Naturalist VOL. XXXVIII OTTAWA, ONTARIO, MAY, 1924 No. 5 THE TIGER SALAMANDER AT NINETTE, MANITOBA* By CLYDE L. PATCH and D. A. STEWART, vicinity of which Dr. D Turing the month of September, 1923, Dr. D. A. Stewart kindly sent me several dozen Tiger Salamanders, Ambystoma tigrinum, collected in the Manitoba Sanatorium, Ninette, of Stewart is Medical Superintendent. The specimens measure from six and one-half to eight inches in length, excepting one outstand- ing individual which measures ten and one-half inches. A few of the specimens s
. The Canadian field-naturalist. The Canadian Field-Naturalist VOL. XXXVIII OTTAWA, ONTARIO, MAY, 1924 No. 5 THE TIGER SALAMANDER AT NINETTE, MANITOBA* By CLYDE L. PATCH and D. A. STEWART, vicinity of which Dr. D Turing the month of September, 1923, Dr. D. A. Stewart kindly sent me several dozen Tiger Salamanders, Ambystoma tigrinum, collected in the Manitoba Sanatorium, Ninette, of Stewart is Medical Superintendent. The specimens measure from six and one-half to eight inches in length, excepting one outstand- ing individual which measures ten and one-half inches. A few of the specimens still retain a small portion of the gills. On September 24th Dr. Stewart sent in a larval specimen of A. tigrinum measuri n g ten inches in length. I trust that a brief account of the adult and the lar- val forms of the Tiger sa- 1 am an d er may prove w or thy of space. The range of this sala- mander—of- ten i n c o r- rectly called "lizaid"—extends eastward from Edmonton, Albo] ta, through the southern portions of Saskatchewan,(Manitoba and Ontario, and south- ward into Mexico. A. tigrinum is the most v/idely distributed of the fifteen or more salamanders inhabiting Canada. The adult form has a stout body, flat head and compressed tail. The color is dull yellow, marked with black blotches, which frequently have the form of vertical stripes; hence the name, Tiger salamander. The larval form is very stout, with a broad, flat head. On each side at the base cf the skull there are three branching, external gills. A fin-like border extends around the tail and up the back to the base of the skull. This tadpole form somewhat resembles the Mudpuppy, Nec- *Published by permission of the Director, Victoria Memoria TIGER SALAMANDER Ambystoma tigrinum All salamanders are harmless, and, though there are myths which would lead us to believe otherwise, they do not possess super-natural powers. Salamaners, like toads, frogs, lizards, snakes and turtles, are beneficial, a
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