548 FIFTH REPORT OF THE ENTOMOLOGICAL COMMISSION. 



pale watery piuk color, and covered with short, blunt spines, from which arise short 

 fine hairs. The surface of the body is somewhat granulated, especially on the for- 

 ward segments and behind the caudal horn. 



The third molt is made in from four to six days, after which the larva is about 1 

 inch long, of a light green color, rather lighter than the under side of the lilac leaf 

 on which it feeds. There is some variation of the ground color at this stage ; some 

 are yellowish green while others incline to a bluish green. The longitudinal stripes 

 are now obliterated and the oblique stripes are as in the prece ling molt. The legs 

 and caudal horn are pink or pale vinous red, the latter beset with short stout spines 

 as before. The head and three following segments have whitish granulations above, 

 while the last segment has black granulations on the upper side. The head has a 

 broad vertical stripe of a dull whitish color on each side. The spiracles are pale 

 pink with a white dot at each extremity. 



The fourth and last molt is made in from seven to ten days, after which the larva 

 is about one inch and three-fourths in length and of the same color as in the preced- 

 ing molt. The stripes on the side of the face, the caudal horn, and the legs are pale 

 pink or flesh color. The last segment is sprinkled with black granulations on the 

 upper side, and the spiracles are bright vermillion with a vertical white slit in the 

 middle. The oblique stripes are greenish white. The larva reaches maturity in 

 from eight to twelve days from the fourth molt, and is nearly 3 inches long. It 

 now changes to a dull brownish color which somewhat obscures the markings, when 

 it descends to the ground, and working its way down into the soil, transforms into a 

 dark brown pupa one inch and three-fourths long, with the tongue-case sunken to a 

 level with the surface. 



Moth, — Expanse of wings, 3^ inches. Head and palpi brownish gray, the latter 

 being darker on the middle joints, and the head darker above and lighter on the 

 sides. The thorax is gray with two black lines edged with yellowish crossing the 

 prothorax. These lines meet two similar ones on each side, which run backwards, 

 one on each edge of the patagiai and meeting behind where the patagia is tipped with 

 white. There is also a curved black line preceded by white and followed by yellow- 

 ish across the hinder part of the thorax. The abdomen is gray with a dark brown 

 line along the middle and two stripes of the same color on each side and the seg- 

 ments are edged with yellowish scales. The whole under side is gray with the breast 

 of a pale coffee-brown color. 



The forewings are gray, mixed with yellowish scales and crossed by four pairs of 

 wavy or angulated dark brown lines more or less distinct, which start from the costa 

 at about equal distances apart, and divide it into five nearly equal parts. The pair 

 nearest the base of the costa runs obliquely as far as the cell, giving off" one tooth, 

 then it takes a somewhat wavy course to the hinder margin nearly at right angles 

 with it. The second pair is distinct on the costa but crosses the wing a little within 

 the discal spot, as a dark brown shade. The third pair starts at right angles with 

 the costa, and curving around the end of the cell, ends near the middle of the hinder 

 margin. The inner of these two lines is slightly angulated while the outer one gives 

 off quite long and sharp teeth, and the space between them is filled in somewhat 

 with ocher-yellow scales. Between this and the outer pair of lines the space is filled 

 in somewhat with whitish. The outer pair of lines starts at right angles with the 

 costa, curves evenly around to vein 2, and then runs straight to the hinder margin. 

 The outer one of this pair is the darkest and most prominent of all, and is neither 

 undulated nor toothed, while the inner one gives off acute angles on each vein. A 

 black shade line, starting from the apex obliquely, extends into the third pair of 

 cross-lines. A parallel dash crosses the outer pair just below, and there are two 

 parallel black dashes near the middle of the wing extending from the median vein 

 out to the outer pair of lines between the veins. The fringes are white, marked on 

 the veins with dark-brown spots from which brown dashes extend nearly half-way 

 across the terminal space. 



