On the 17th of June I captured a female specimen of Hadena xylinoides, early in the evening on a sugar cask. Having confined it in a pill box I laid it aside and did not examine it again until the 20th, when it was observed that a number of eggs had been deposited. These, although examined casually by the microscope, I neglected taking a minute description of. They were about medium size, of a flattened conical form, greenish in colour, and ornamented with many striæ. The eggs hatched on the 24th of June, when the following description of the young larva as seen under a common eye-glass was taken