403 



than ill A. rernafd. A iiiarif'mal row of inlrrvi'iiiilar l)lack dnts. I'"riiijfe 

 l)al('r, clear, coiicoloroiis with llic liind \viii(rs. The laKcr pair asii, clear, 

 wilhoiil any markiiiirs, except a laiiif <liscal dol. lieiieal li. clear like the liiiKJ 

 wiii<is al)()ve aiul with I'oui- discal dots, those on the hind winys lari/esl, with 

 a costo-apical black .spot-; I'ringe concolorons with the wiiiirs. 



Length of body, 0.30-0.40; fore uini^, ().50-0.()7 : e.\))aii.sc of winirs, 

 1.12-1.28 inches. 



It varie.s much in the distinctness of the lines, usually represented by 

 spots on the costa, median vein, and inner edifc. 



Salem, February 2;'), March, April, and Jioslon, ^lass. (I'lnu'rton, San- 

 born, Packard); "New Haven, Conn." (ilcrrick); Albany, X. V. (Lintner); 

 Illinois (Shimer, Riley); Missouri (liiley); Dallas, 'I'ex. (I'.oll, .Mus. Peab. 

 Acad. Sc). 



'I'he |)ale-asli transparent wiuiis, the i('\v black dots and costal spot>, and 

 oi)liipie, apical, black streaks, and the t()iir discal dots beneath, characterize this 

 species. One of the two Texan specimens received only diH'ers from ^las.sa- 

 ciiuselts examples in having the markings a little more distinct, the narrow 

 black lines being more distinct than usual. 



Female. — Pale gray. Body hairy, acute at the end of the abdomen, the 

 scales loose, the body being somewhat hairy. Head dark: thorax whitish- 

 gray; sides of body and beneath whitish-gray, with a lateral row of dark 

 spots; sometimes a large square black spot on hinder part of the thorax. 

 Antemi;r loosely ciliated. A dark stripe along the back, .sometimes consist- 

 ing of two black lines filled in with white between, or replaced by a row of 

 white, dorsal, abdominal spots. Legs spotted and ringed with black. I'lie 

 segments of the abdomen armed with two irregidar rows of sharp, distinct, 

 slender spines. End ol" alxlomen elevated in walking, more acute than in 

 au(u?)ina/ct. 



Length, 0.20-0.40 inch (tifty specinu'ns (b-scribed from lili')- 



To show that, as stated i)y Messrs. .Morrison and ,Mann, P<'ck had the 

 present tipecies before liini w Ih.mi he drew u[) his account, I (|uole his origiiiul 

 description, which applies throughout, as do his drawings, to the spring brood: — 

 "Egg elliptic, aV of an inch in length, of a pearl colour with a yellowish cast. 

 Eggs laid in thirteen days after the females ajipear.'' In twenty-one days, the 

 WDrms appear, and have ten li-et, of w Iiich li)ur are posterior. "The larva 

 or caterpillar is, when full grown, about nine lines long, the head pale, marki'd 

 on eacli side with two transverse blaikish stripes; the back a.-h coloured, 



