. Bulletin of the Southern California Academy of Sciences. Science; Natural history; Natural history. b. Papilio rutulus. a.—Egg, highly magnified, slightly enlarged. FIGURE 16. -Larva,. Neophasia menapia. Egg, greatly magnified. FIGURE IS. The species is polygoneutic, or, in other words, produces a suc- cession of broods throughout the year. It is incapable of passing the winter in any of its phases, and the northern states must therefore be annually restocked by migration. Of the several species of but- terflies which move in occasional swarms, this is the only one in North America that can
. Bulletin of the Southern California Academy of Sciences. Science; Natural history; Natural history. b. Papilio rutulus. a.—Egg, highly magnified, slightly enlarged. FIGURE 16. -Larva,. Neophasia menapia. Egg, greatly magnified. FIGURE IS. The species is polygoneutic, or, in other words, produces a suc- cession of broods throughout the year. It is incapable of passing the winter in any of its phases, and the northern states must therefore be annually restocked by migration. Of the several species of but- terflies which move in occasional swarms, this is the only one in North America that can be designated a true migrator. It is an in- spiring sight to see one of these flights in the fall of the year, heading southward, composed of millions of individuals. The spring movement northward is of a totally different character. There is no swarming 85. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Southern California Academy of Sciences. Los Angeles, Calif. : The Academy
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