282 MEMOIRS OF THE NATIONAL ACADEMY OF SCIENCES. 



line oil segineut S. Aiuil feet pale outwardly, not used, slender, geutly divergent. Mature larva 

 corresponds in structure of tlie humps to Scltizura hadia, and like it is largely green, being more 

 green tban Janassa and with lower humps. The larva in Stage 1 is scarcely distinguisliable 

 from Schi::ura iponumv. (Dyar.) 



EGG OF XYLINODES I.IGNICOLOR (see p. 190). 



" From two to ten laid together <>n underside of leaf. Itathor more than lieinis])lierical, 

 flat below. Smooth, slightly shining, whitish green. Diameter, 1.1 mm.; height, 0.7 mm. I'nder 

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

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

 IMicropyle 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. 

 Ajjproximate 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 tliis work the eggs and freshly hatched larva 

 of this species, kindly sent by JNIiss Ida M. l*21iot, from N()n(iuitt, Jlass. It was received and 

 described August l.'9. It feeds on the oak. 



-Br///.— Of the usual hemispherical form, shell white; surface seen under a lens to be linely 

 granulated; under a onebalf inch objective surface reticulated with distinct, regular hexagonal 

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

 roughened. Diameter, about 1.3 mm. 



Larva, Stayc I. — 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, 0, and 8 banded with pink-red; on the side of segment 1 a distinct, oblique, ])ink, 

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

 third abdominal segment pink above and ou the sides, while only the upjjcr side of segments ti 

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

 a i)air 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 iu ]I. f/uttivitta in general shape and size, though differing in relative size. Those of the i)air 

 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 tluit of 7/. (jiiftivUta in Stage I; it differs in the following resi)ects: 

 The lowest tine of the i)rothoracic antlers is a. little more than twice as long as in f/uttitntta, all the 

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

 arise are entire except that ou the eighth segment, and they are honey yellow in color. The 

 abdominal horns are nearly as in (juttiritla (Fig. 83, III, />, c, d), but the second abdominal pair are 

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

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

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

 not black. The tines of the prothoracic antlers are spinulose, es)>ecially the one projecting 

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

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

 few hours to brown. 



StiKje II. — Length, mm. Now of the same shape as in 11. ohlitiiia (PI. XXX, tigs. 2, 2cf), the 

 prothoracic dorsal si)ines of the same sha])e, ending in two unequal sharji spines. In my alcoholic, 

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

 not greenish. Tiie head is now banded and S])0tted, there being two longitudinal reddish bands 

 ou each side of the clypcal region. From the ])rothoracic dorsal spines two parallel blackish lines 

 extend to the hind edge of the iirothoracic sc^gmeut. The body is mottled with red on the sides. 



Stage III. — Length, 14-15 mm. Head with two i)arallel blackish lines. The prothoracic 

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

 forked in front, extending arit(Miorly to the inside of each tubercle and behind on the third thoriM'ic 

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



