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masses, much as in the dorsal, wider than the next. Stigmatal stripe 

 dark, including the dark brown stigmata. Below this a pale stripe that 

 reaches to the fringe. Color of all the stripes gray, slightly flesh colored 

 in the paler ones. Elevation of joint 8 more distinctly black in the dark 

 stripes, the central fulvous on the elevation without the black dots. 

 Piliferous spots orange, rather inconspicuous except the posterior dorsal 

 pair of joint ii, which are prominent and project backward. Head 

 mottled with pale brownish, otherwise as at beginning of period. 

 Three of the ocelli black. Legs pale. Venter pale without the black 

 dots, the centres of joints 4 to 8 with purplish black spots, traces of 

 same on other joints. Duration of this period twenty-five days. 



Chrysalis. — Length 1.25 inches, length of wing and tongue cases 

 .65 inch, these reaching to the posterior part of joint 5. Shape to 

 joint 5 cylindrical, the rest of the way conical. Depth of thorax .40 

 inch, of joints 2 to 4 .38. Head, thorax and wing cases chagreened, 

 rather coarsely, the head end rounded, eye cases not very prominent. 

 Abdominal joints punctured, tip ending in six hooks in three sets ot 

 two each as to length, the two longer turning outward, the two short 

 at the base turning inward. Color dark chestnut-brown, covered with 

 a glaucous powder. Duration of this period from twenty -eight to 

 thirty-four days. 



October 14, 1882, a female Amatrix was brought to me, from which 

 I obtained the next day 261 eggs. These began hatching May 3rd, 

 1883, and continued hatching to June 21st, making the egg period 

 from 200 to 249 days. Only the few that hatched first were fed, and 

 the greater part of those failed to reach maturity, owing mainly to a 

 form of bacterian disease that has prevailed in the most of the species 

 of caterpillars I have attempted to raise this year, and it has not been 

 confined to the breeding cages, but has been as destructive in the fields. 

 Two imagines were raised, one pupating June 21, and producing the 

 imago July 25, the other pupating July 8, and hatching August 3. 

 This gives us a minimum period of 277 days from the ^gg to the 

 imago. Supposing that the difference in hatching of the eggs noticed 

 here is their usual way, this accounts for fresh specimens being found 

 in the woods from August to October, and I think very likely with a 

 sufficient number of eggs other species would show a similar trait. I 

 am of the opinion that all our species are single brooded, this being 

 based on observations of different species in the woods, and rearing 

 three different species. 



This species was fed most of the time on Cottonwood, though they 

 were fed for a few days on Lombardy Poplar. In pupating they spun 

 leaves together, lining the leaves with a very thin cocoon of silk. Both 

 specimens obtained were males, one with the fore wings the uniform 

 gray, the other with the dark longitudinal shade through the middle 

 of the wines. 



