A Description of the Larva of a Species of the Lintneri Group of Gluphisia

GLUPHISlA SEVERA Hy. Edw. I886--H. Edwards, Ent. amer., ii, 167. Egg(.$). Hemispherical, the base flat; smooth, slightly shiny whitish green, the micropyle round, small, black. Under a half inch objective it is seen to be covered with irregular flattened reticulations, not raised above the surface of the egg, much as in Cerura, but more irregular, ranging in shape from quadrilateral to hexagonal. Diameter x.I mm. Found on a poplar leaf, deposited singly. I am not sure that this egg belongs to this species, as it failed to hatch, but it was found with the larvae and probably belongs here. tirst larval stage. Not observed. Second stage. Head slightly bilobed, not shiny, pale green; mouth whitish; ocelli black; width 0. 9 ram, Body smooth, slender, without humps or tubercles, uniform pale green, not shiny, with a faint yellow subdorsal line. No other markings. Tkird stage. Only the cast head case was observed, the width of which was 1-45 mm. Iourtk stage. Width of head, 2. 3 ram. Much as in the first part of the last stage. There is a moderately distinct, pale yellow, subdorsal line without other markings, or else traces of lateral and stigmatal yellowish lines, the former broken, the latter continuous, but faint. Spiracles small, faintly ocherous. As the stage advances the stigmatal line becomes the most distinct, the others becoming faint. tfl]z stage. Head very slightly bilobed, somewhat flattened in front, uniform pale, sublustrous green, mouth parts paler, jaws black; width 3.5 mm. Feet normal, all used in walking, concolorous with the body, the claspers whitish. Body long and slender, noctuiform in appearance, without humps or tubercles; piliferous dots absent, the hairs being reduced to mere rudiments. Color uniformly non-lustrous pale green, semitransparent, showing plainly the pulsations of the dorsal vessels. An obscure, pale yellow, stigmatal line. Spiracles dull ocher. The larva rests on a slight web on the back of the leaf, the head held out flat. As the stage advances the markings become much more pronounced. The head is mottled with white, especially on each side of the clypeus; clypeus white centrally;