Sometime during the latter part of July last, while wandering about the outskirts of a large potato patch, and examining the damage caused by the Coloroado beetle. I found on the vines the larva of a beetle belonging tothe family of Coccinellidæ or Lady Birds. The insect was new to me and although there were no larvaæ of the Colorado beetle in the immediate vicinity, yet I was in hope that I had discovered a new enemy of our abominable pest. To test the question more at leisure, I took my newly-found treasure home, and placed it in a box, wherein were numerous specimens of Colorado larvæ in all stages, from the diabolical looking little monster just hatched from the egg, to the full-grown, fat, and repulsive larva dragging its bloated body slowly about in search of some convenient place to undergo the transformation into the pupal state.