530 



Regarding the earlj stages of this species, Mr. L. W. Goodell writes 

 me as follows: "The caterpillar was taken at Amherst, Mass., on the 

 chestnut, Aug. 20th; it was of a bluish-green color, with a thick wrinkle on 

 each ring, those on the tilth and eighth thickest and light brown ; on the hack 

 of the eleventh ring are two little warts tipped with brown. When fully grown 

 it measured two inches and three-tenths of an inch in length, the body largest 

 near the tail and tapering to the head. Aug. 21st, it drew a few leaves together, 

 and spun a thin, silky, pear-shaped cocoon, became a chrysalis the 24th, and 

 was transformed to a moth Sept. 13th. The chrysalis was one inch and two- 

 tenths of an inch in length and bluish-white in color, ending in a flattened 

 tail, tipped with black, and on each edge three small black spines, each 

 ending with a minute hook.'' The pupa is represented on plate 18, tig. 1 a. 



Feeds on the black birch; of the color of the twig, dull brownish- 

 red, speckled considerably, and especially above, with dirty-white specks, 

 arranged very frequently in lines, either longitudinal on the sides or curved 

 forward above and becoming transverse. Head a little paler than the body ; 

 lab rum and feet at base whitish. On the posterior portion of the fifth and 

 eighth segments above, there is a transverse paler ridge bordered with black. 

 Length two inches. It forms a cocoon by spinning in the midst of a bunch 

 of leaves a close and firm cocoon of a bluntly fusiform shape, having a long 

 neck extending above and below (it hangs perpendicularly) to the end of the 

 many threads; open at both ends by an aperture about one-tenth of an inch 

 in diameter. — (8. H. Scudder.) 



Desiderata. 



Eitnomoa concisaria Walk., List Lep Het. Br. Mus., xxxv, 1551, 1866. — 

 "Male. Pale yellow. Palpi stout, squamous, obliquely ascending, not rising 

 higher than the vertex; third joint extremely minute. Antenna' broadly pec- 

 tinated nearly to the tips Abdomen hardly extending beyond the hind wings; 

 apical appendages rather large. Hind tibia? incrassated. Wings ample, with 

 a broad antemedial dull ochraceous line, which is darker and more complete 

 in the hind wings, and is still darker on the under side; a black point in tin- 

 disk; a broad ferruginous marginal band, which includes an acute streak, 

 the latter proceeding from the costa of the fore wings; the band bordered 

 on the inner side beneath by a festooned blackish line. Fore wings sub- 

 falcate, acute; a ferruginous basal patch, which does not extend to the costa; 



