EGG—Conoidal, truncated, broad at base, the sides moderately rounded ; depressed at summit; marked by about eighteen prominent, vertical, slightly wavy ribs, half of which extend from base to summit and form around the latter a serrated rim ; the remainder end irregularly at two thirds to three quarters distance from base ; between each pair of ribs are equidistant transverse striæ. Broader at base than Alcestis or Idalia. Duration of this stage 12 to 17 days.

Among the Coleopterous hosts there is a family called Long-horns, or Capricorns, in vulgar parlance ; or Cerambycidæ, when we are talking learnedly. They derive these names from the fact that they possess very long antennæ (sometimes longer than their bodies), which are generally re-curved like the horns of a wild goat (the Latin Caper).

Before describing Noctuidæ the structure of the front or clypeus, between the compound eyes, must be examined. In a few genera it has a projection, or again a cup-like depression. The presence of ocelli, behind the antennæ, must be ascertained, and the compound eyes must be viewed under the microscope to see if the surface is naked or hairy.

During the summer of 1879, while working with Professor Comstock upon the natural enemies of the cotton worm, I came across the following passage in his fleld notes of the previous year :—

“August 27.–I found yesterday a cotton worm about five-eighths of an inch in length, which, though yet alive, was being destroyed by three green larvæ which were upon it. I found the specimens abont 10 a. m. Last evening I observed that the cotton worm was nearly eaten. The parasites had very short bodies, which, when they moved, were pointed at one end. I had intended to describe the specimens, but I find that they have spun cocoons about their bodies.