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.