An 18th-century encyclopedia article on the coccinella genus of insects, focusing on Coccinella cacti, the source of cochineal dye. It describes the nopal plant on which the insects are bred, how the plant is cultivated, the insect's life cycle and hazards, and the Indian methods of killing the insects by hot water, oven heat or sun. It ends with the regions of New Spain and Peru where cochineal is produced, with Oaxaca as the chief center of trade.