190 



PSYCHE. 



[April, u>o 



wool stuck on the base of a tree in a pasture, 

 on horse hair in a similar location and on 

 spider webs under the edges of rocks. Ellip- 

 tical, flattened slightly on two sides but not 

 so much as usual. Reticulations represented 

 by rather smooth shallow dents, just indi- 

 cated. The whole surface besides very linely 

 but distinctly shagreened, the little flattened 

 elevations all quite regular, rounded; slight- 

 ly shining, pale yellowish, changing to 

 pinkish yellow ; size .8 X .6 X .5 mm. Eggs 

 from Keene Valley, New York, June 25th ; 

 Jefferson Highlands, New Hampshire, June 

 30th; Washington, D. C., May 31st. 



Stage I. Very long, slender and looping 

 with great rapidity till the food plant is 

 found; when disturbed suddenly curl up in 

 an irregular S-shape and keep still. Of nor- 

 mal Geometrid structure, abdominal feet on 

 joints 10 and 13; segments annulate, not 

 very regularly. Tubercles moderate, dis- 

 tinct, dark, a little elevated, normal, i and ii 

 in line, iii above and before the spiracle, iv 

 behind and below it, v sub-ventral; no sub- 

 primaries. Setae short, stiff with small 

 glandular tips. Head blackish; body sordid 

 yellowish white, rather translucent. After 

 eating, sordid grayish green, feet pale; no 

 marks. At the end of the stage a broad 

 irregularly powdery subdorsal band appears. 



Stage II. Head strongly bilobed, round, 

 flattened before, free from joint 2; black, 

 lighter on the apices of the lobes befoie ; 

 width .6 mm. Body moderately slender, 

 uniform, finely, but not distinctly, numer- 

 ously annulate. Anal flap truncate, notched, 

 anal feet with small plates ; shields uncorni- 

 fied, concolorous. Tubercles small, black, 

 iv on the elongated segments (5 to 10), on a 

 large, rounded, elevated, black base ; all dis- 

 tinct. Setae short, black, club-shaped at 

 tip. Whitish, faintly green from the food 

 a broad, diffuse, pulverulent purple-brown 

 subdorsal band on joints 2 to 13, the feet 

 also marked slightly with this color and 

 tubercle iv surrounded by it. Spiracles 

 black; feet normal. 



Stage III. Head rounded, slightly squared 

 at apex, not bilobed, erect, free from joint 

 2; black, whitish marked over the clypeus 

 and in an erect line to the top of each lobe, 

 joined by a transverse bar above the clypeus ; 

 width .8 mm. Body whitish, speckled by 

 the distinct, though not large, slightly 

 elevated black tubercles, shading to pale 

 slate gray dorsally and ventrally. Segments 

 numerously but not very strongly annulate. 

 Dorsum irregularly speckled with brown, on 

 thorax and less plainly on joints 10 to 13 

 forming a diffuse subdorsal band; a more 

 evident spot behind the spiracle. Shields 

 concolorous, not cornified. Body some- 

 what slender and elongated, cylindrical, 

 smooth; all feet whitish. 



Stage IV. Head cordate, erect, flattened 

 before, the lobes slightly projecting in front, 

 with an elevated tubercle i ; whitish, gray 

 mottled, a blackish shade about the sides and 

 over the lower part of clypeus, reappearing 

 in a patch on the inner side of the verte.x of 

 each lobe; width 1.2 mm. Body long and 

 slender, cylindrical, uniform ; joint 13 trun- 

 cate, slightly concave posteriorly ; anal feet 

 narrowly triangular; no prongs. Central 

 segments with a broad smooth space anteri- 

 orl3', then about 15-annulate, not very dis- 

 tinctly, 12 of the annulets situated between 

 tubercles i and ii, the end segments normally 

 contracted. Flesh colored, shaded with 

 greenish and sparsely brown dotted; on the 

 thorax the dots still slightly indicate a sub- 

 dorsal line, but posteriorly it is entirely 

 broken up, forming a group of dorsal dot- 

 tings on joint 9 and about tubercle iv on S 

 and 9. Tubercles slightly prominent in 

 blackish patches. Setae short, dark, directed 

 obliquely posteriorly. No shields. 



Cocoon. The larva is slung in a delicate, 

 open, reticular web. I see no trace of the 

 "girth" described by Riley and Smith and 

 suppose the net was partly broken in their 

 specimen giving rise to the appearance of a 

 single strand. 



Pupa. This hangs in the net with the 



