circular warts. It is fed upon eggs, which it eats greedily.

It would be interesting to know whether the northern specimens, if
venomous at all, are as fully equipped with poison bags and fangs as
Dr. Gunther finds the Mexican specimen to be. Some of our Western or
Mexican readers may be able to make comparative tests. Meantime it
would be prudent to limit the use of the "monster" as a children's
pet.

The foregoing appeared in the SCIENTIFIC AMERICAN of Oct. 7, 1882.

We are now indebted to a correspondent, Mr. Wm. Y. Beach, of the Grand
View Mine, Grant County, Southern Arizona, for a fine specimen of this
singular reptile, just received alive. The example sent to us is about
twenty inches long, and answers very well to the description of the
monster and the engraving above given.

In the course of an hour after opening the box in which the reptile
had been confined during its eight days' journey by rail, it became
very much at home, stretching and crawling about our office floor with
much apparent satisfaction.

Our correspondent is located in the mountains, some nine miles distant
from the Gila River. He states that the reptile he sends was found in
one of the shops pertaining to the mine, which had been left
unoccupied for a week or so.

Apropos to the foregoing, we have received the following letter from
another correspondent in Arizona: