220 



11 is at once known I)}- being entirely ochre-yellow, and by tlie prom 

 inenl pink tliscal spot and two extradiscal bands on l)oth wings. 



Larva. — Average length, 0.S5. "Color quite variable, either pale yellow- 

 ish-green, deep rufous with an orange tint, or of a mixture of gray and cream- 

 color. Minutely punctate all over. Segments 1, 2, and 3, extremely short- 

 4 lon<^cst and widest, having two wrinkles each side, with a dark depression 

 between them ; 5, B, 7, and 8, of equal length ; 9, 10, and 11, short, the two 

 former also somewhat wider than the other. Dorsum dark, with a lighter 

 middle line, and a light, somewhat irregular, subdorsal line, which converges 

 anteriorly and diverges posteriorly of each segment ; two dark spots ante- 

 riorly each side of the middle line. Sides more or less wrinkled, lighter than 

 dorsum, and with a light longitudinal ridge below. Venter variegated with 

 loni'iludinal marks, and shaded outwardly witii deep olive-green, in strong 

 contrast with the lateral light ridge. Stigmata minute, black, and placed on 

 an oval swelling at the anterior portion of the segment. Head of the same 

 color as body, with a dark line, edged each side with white, continuing from 

 the thoracic segments. 



Chrysalis. — Length, 0.50. "Wing-sheaths and tip of abdomen pale 

 Initf, the middle of the abdomen ver/ light yellowish-green. A purplish 

 dorsal line, obliquely truncated at the head, having a somewhat trianguhir 

 appearance, the ventral angle being lengthened into a slightly bifurcate snout. 

 Anal segments quite attenuated, the extremity being also slightly bifurcated. 

 Stigmata small, black, and distinct. 



" The female moths deposit their eggs in rows of about twenty, along the 

 edge of a leaf, or along the stem of the common chickweed {Stellarla media). 

 These eggs are not quite 0.02 of an inch long, and arc oval, flattened, and 

 depressed near the center. When first laid, they are yellowish-white, but 

 change within two days to a very bright, shiny, red color, between Venetian 

 and vermihon. These eggs hatch in a very short lime, frequently within a 

 week, into thread-like worms, with ten legs only, and with the habit of loop- 

 ing themselves into all manner of shapes, especially into a circle. 



"In about a mouth, durinij: hot weather, they acquire their full size. 

 They are (juite variable in color, being either gray, yellowish-green, or dark 

 brown. They change to chrysalids within a slight net attached to the leaves 

 oi' their food-plant, and in this state the skin is so thin that betore the moth 

 escapes the colors of the v>ingssho\v distinctly through it. There are several 



