"Not at all to men; it only hurts elephants and buffaloes."

"But tell us its name! what is it?" cried Dick impetuously.

The naturalist began to speak in a slow, oracular tone.

"This insect is here a prodigy; it is an insect totally unknown in this country,-in America."

"Tell us its name!" roared Dick.

"It is a tzetzy, sir, a true tzetzy."

Dick's heart sank like a stone. He was speechless. He did not, dared not, ask more. Only too well he knew where the tzetzy could alone be found. He did not close his eyes again that night.

CHAPTER XVIII.

A TERRIBLE DISCOVERY.