282 MEMOIRS OF THE NATIONAL ACADEMY OF SCIENCES. 



Hue on segment 8. Anal feet pale ontwanlly, not used, slender, gently divergent. INIature larva 

 corresponds in strncture of the humps to Schi::iira hadia, and like it is largely green, being more 

 green than Janassa and with lower humps. The larva in Stage I is scarcely distinguishable 

 from Schizura Ipomoea'. (Dyar.) 



EGG OF XYLINODES LIGNICOLOR (SCe p. 19(t). 



" From two to ten laid together on underside of leaf. Rather more than hemispherical, 

 flat below. Smooth, slightly s1iining,wliitish green. Diameter, 1.1 mm.; height, 0.7 mm. Tuder 

 Zeiss aa objective (GO diameters) covered with small, slightly raised hexagonal reticulations, 

 which become gradually smaller toward the micropyle, finally becoming minute and flattened. 

 Micropyle not depressed. The reticulations are slightly elongate on the sides but become round 

 below and pass to the underside, where they are somewhat irregular, forming a triradiate area 

 of much elongated meshes, the center of which is not always at the center of the egg. 

 Approximate diameter of a reticulation of upper surface = 0.05 m. (50 /<.)." (Dyar.) 



LARVAL HISTORY OF HETEROCAMPA PULVEREA (see p. 249). 



I received too late for description in the body of t'lis work the eggs and freshly hatched larva 

 of this species, kindly sent by Miss Ida M. Eliot, from Nonquitt. Mass. It was received and 

 described August 29. It feeds on the oak. 



_E;,^/^/._Of the usual hemispherical form, shell white; surtace seen under a lens to be finely 

 granulated; under a one-half inch objective surface reticulated with distinct, regular hexagonal 

 areas, which become narrow and small toward the apex of the egg; the surface of each area is 

 roughened. Diameter, about 1.3 mni. 



Larva, Stage /.—Length, 4 mm. Head large, much wider than the body, well rounded; surface 

 smooth, unarmed, honey-yellow. Body tapering to the end, pale greenish yellow ; abdominal 

 segments 1, 3, G, and 8 banded with pink-red; on the side of segment 1 a distinct, oblique, pink, 

 lateral stripe extending forward and ending at the base of the third pair of thoracic legs; the 

 third abdominal segment pink above and on the sides, while only tlie upper side of segments (i 

 and 8 are pink. There are nine pairs of dorsal horns. Those on the prothoracic segment forming 

 a pair of very large antlers, with four large tines, two extending forward, one shorter laterally, 

 and the fourth extending backward. The other eight pairs on the abdominal segments are much 

 as in U. guttivitta in general shape and size, though diflering in relative size. Those of the pair 

 on the second abdominal segment are slightly longer than those on the first. The fourth to 

 seventh pairs of the same size and length; eighth pair slightly longer; ninth pair about a quarter 

 shorter than the eighth pair; all are piliferous, and become black-brown., 



This larva is nearest to that of H. guttlvina in Stage I; it differs in the following respects: 

 The lowest tine of the protlinracir antlers is a little more than ticivc as long as in guttiritta, all the 

 four tines being nearly equal in length. All the chitinous plates from which the abdominal horns 

 arise are entire except that on the eighth segment, and they are honey-yellow in color. Tlie 

 abdominal horns are nearly as in guttivitta (Fig. 83, III, h, c, d), but the second abdominal pair are 

 smaller than those in segment 1 and only very slightly smaller than those behind; tliose on the 

 third abdominal segment are of the same size as the three following pairs; those on the eighth 

 segment are of the same size as those on segment 1. The suranal plate is rounded and greenisli, 

 not black. The tines of the prothoracic antlers are spinulose, especially the one projecting 

 backward. Tlie thoracic legs are blackish; the abdominal ones pale greenish yellowish. Miss 

 Eliot writes me that when first hatcheil the spines are pinkish, but that they change color in a 

 few hours to brown. 



Stage JJ.— Length, G mm. Now of the same shape as in R. obliqua (PL XXX, figs. 2, 2a), the 

 prothoracic dorsal spines of the same shape, ending in two unequal sliarp spines. In my alcoholic 

 specimens the markings are as in H. obliqua of the same stage, but the dorsal lines are reddish, 

 not greenish. The head is now banded and spotted, there being two longitudinal reddish bands 

 on each side of the clypeal region. From the prothoracic dorsal spines two parallel blackish lines 

 extend to the hind edge of the prothoracic segment. The body is mottled with red on the sides. 

 Stage 1 1 L— Length, 14-15 mm. Head with two parallel blackish lines. The prothoracic 

 spines large but blunt, bearing a liair, with two lateral teeth. Body with a reddish dorsal band 

 forked in front, extending anteriorly to the inside of each tubercle and behind on the third thoracic 

 segment, dividing to unite again on the second abdominal segment, and sending an oblique line 



