. Bulletin of the Southern California Academy of Sciences. Science; Natural history; Natural history. Pholisora LIBYA Scud. EGG. Size mm. wide by .8 mm. high. Color, when first laid, dull orange, changing to a soiled ivory white. Shape, hemis- pherical, the base flat and micropyle depressed. The surface of the egg is thrown into a number of ridges which radiate from the micropyle. These number about 8 or 9 on the superior surface, and are increased to approximately 18 on the lateral surface. They are widened and protruded on their crests into a number of papillae or knob-like processes. Th
. Bulletin of the Southern California Academy of Sciences. Science; Natural history; Natural history. Pholisora LIBYA Scud. EGG. Size mm. wide by .8 mm. high. Color, when first laid, dull orange, changing to a soiled ivory white. Shape, hemis- pherical, the base flat and micropyle depressed. The surface of the egg is thrown into a number of ridges which radiate from the micropyle. These number about 8 or 9 on the superior surface, and are increased to approximately 18 on the lateral surface. They are widened and protruded on their crests into a number of papillae or knob-like processes. The area between these vertical ridges is bridged by low transverse parti- tions. The latter are irregular in size and height, and run at various angles, but a considerable number of them tend to radiate from the knob-like processes previously mentioned, giving the latter a stellate appearance. See Plate 31. Oviposition occurs on the leaves of Atriplex canescens James., and probably others of the same genus, the eggs being laid singly. Described and figured from a single &gg collected at Indian Wells, Coachella Valley on October 5, 1930. On the 8th of the same month 15 eggs were obtained from which one larva was raised to maturity. LARVA, first instar. Length mm. The caterpillar is cylindrical, with a cream colored or pale yellow body which is bare of ornamentation or appendages. A white collar occurs on the first seg- PLATE 31 ment, edged anteriorly with black. In T-, X- „, ,. TT, successive instars the larva resembles the Egg ot Pholisora lihya. magnified x 25. mature phase. DrawinK by Comstock. Mature larva. Length, fully ex- tended. mm. Widest at the 6th segment, tapering gradually toward the head, and more acutely toward the caudal end. The body is pale blue-green and is pro- fusely covered with white raised points, from each of which arises a short single white hair. There is a line of black dots running longitudinally on each side of the median line, one do
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