Monograph of the bombycine moths of North America, including their transformations and origin of the larval markings and armature . ed with black, while the high, conical, or (sometimes) rounded granulations are snow,white. The lateral yellow stripe along the l)ody is more distinct than before: it is borderedabove with pure white, and above this is the linear dark purple spiracular line, shaded abovemore distinctly than in the preceding stage with deep blue-green or verdigris-green: the caudalhorn considerabh- higher than before, being one-fifth as long as the whole body: it is pink, withwhite
Monograph of the bombycine moths of North America, including their transformations and origin of the larval markings and armature . ed with black, while the high, conical, or (sometimes) rounded granulations are snow,white. The lateral yellow stripe along the l)ody is more distinct than before: it is borderedabove with pure white, and above this is the linear dark purple spiracular line, shaded abovemore distinctly than in the preceding stage with deep blue-green or verdigris-green: the caudalhorn considerabh- higher than before, being one-fifth as long as the whole body: it is pink, withwhite spines bearing black bristles. The larva also differs from that of stage II in the suranalplate, which is more deeply forked, the forks being thicker. larger, and with several tubercles;the sides of the plate are heavily spined and on the surface are about six central, small, conicalspines. Now, the dorsal abdominal spines are distinctly ivor3-wliite on the outer side from thebase up to the dark tip. The spiracles are much larger than before, distinctly interrupting thedark purple spiracular line, which is paler than --I. hiroJor. armature of stages I and II. 70 MEMOIRS OF THE NATIONAL ACADEMY OF SCIENCES. Staye IV.—It is possible that the hirva described by me in the Proceedings of the AmericanPhilosophical Society were small or freshly molted specimens, since an alcoholic specimenrepresented by fig. 2, 20 mm. in length, and in which the dorsal abdominal spines are small, notbeing differentiated as in the last stage, evidently is in the stage before the last. In this stage,also, the two dorsal spines on the first abdominal segment are simpler and a little smaller thanthose on the succeeding segment. I therefore copy Doctor Jewetts description of this stage, which gives the markings antlcolors: Larv;v> passed their third niult June 13, three-fourths to seven-eighths of an inch long,nearly cylindrical, green. Headgreen, bilobed, minutely pubescent. Mandibles brown
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