F. Sumichrast gave a much more
detailed account of the habits and mode of life of this animal, and
forwarded specimens in alcohol to Paris, where they were dissected and
carefully described. The results of these investigations have been
published in the third part of the "Mission Scientifique an Mexique,"
which, being devoted to reptiles, has been edited by Messrs. Aug.
Dumeril and Becourt.
The heloderm, according to M.F. Sumichrast, inhabits the hot zone of
Mexico--that intervening between the high mountains and the Pacific in
the districts bordering the Gulf of Tehuantepec. It is found only
where the climate is dry and hot; and on the moister eastern slopes of
the mountain chain that receive the damp winds from the Gulf of Mexico
it is entirely unknown. Of its habits but little is known, as it
appears to be, like many lizards, nocturnal, or seminocturnal, in its
movements, and, moreover, it is viewed with extreme dread by the
natives, who regard it as equally poisonous with the most venomous
serpents. It is obviously, however, a terrestrial animal, as it has
not a swimming tail flattened from side to side, nor the climbing feet
that so characteristically mark arboreal lizards. Sumichrast further
states that the animal has a strong nauseous smell, and that when
irritated it secretes a large quantity of gluey saliva. In order to
test its supposed poisonous property, he caused a young one to bite a
pullet under the wing. In a few minutes the adjacent parts became
violet in color, convulsions ensued, from which the bird partially
recovered, but it died at the expiration of twelve hours.
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