122 MEMOIRS OF THE NATIONAL A<'A1)EMV OF SCIENCES. 



Geographical (listribution. — Oroiio, Me. (Mrs. Feruald); Plattsburji', N. Y. (IhnlsDn): West 

 Firms, N. Y. (Angus); Kaiiawba Valley, West Virffiiiia (\V. 11. Edwards, I\Ins. Com]). Zool.); 

 Ohio (I'ilate); Kittery, -\le.; New York, IJliode Island, Wisconsin, Clianipaiyn, 111. (Frencli); 

 Chicago, 111. (Westcott); Manhattan, Kans., moth, May 2."»-Juue i' (Popenoe); Arkansas ( Palm). 



Dataiia coiitracta Walker. 



(PI. II, li^'. 18, ^ ; 1!1. 9.) 



Datana coniracia Walker. Cat. Lep. Het.Br. Mils., v. ]>. 1062, 1855. 

 Morris, Syn. Lej). N. Amer., \i. 247. 1862. 



Groto and Rob., Proc. Eut. Soc. Phil., vi. ]), 1 1. lS(iil; pi. 2. tis- s, li;:. (i, var. 

 Pack., Proc. Ent. Soc. Phil., iii, p. 355. 18U4. 

 Grote, New Check List N. .Vmor. Moths, p. 18, 1882. 

 Smith. List Lep. Ror. .\mer., p. 30. 18!)]. 

 Kirby, .Syn. Cat. Lep. Het., i, p. 613. 1892. 

 Neum. and Dyar.Trans. Anier. Eut. .Soc. xxi. p. VM. 18n4 ; .Tonrn. X. Y. Ent. Soc. ii. p. 116. 1894. 



Larva. 



(Pl.XIV. tigs.7, 7«.7ft.') 



Angus in Grote and Rob., Proc. Ent. .Soc. Phil., vi, p. 14, 1866. (Fnll-fed iarva described.) 

 lieutenmiiller, Can. Ent., xx, p. 134, 1888. (Fourth and last stage described.) 

 Pnchml, ,T<mr. N. York Ent. Soc, i, p. 60, Jnne, 1893. (Full-fed larva described, i 



Moth. — Exterior margin of fore wings entire. Thoracic patch ochcrycllow shading into 

 tawny behind; thorax a little paler than the fore wings, which are biift' (1?., V, 13); the costal 

 shade lirighter, more ocherous; the wing rather thickly dusted with brown bhick scales, 

 coHcolorous with the pulverulent line and with moderately tlistinct discal dots. Bordering the 

 lines the irrorations arc absent for a short space, causing the lines to npi)ear as if bordered with 

 obscure pale shades. Frequently lines 1 and 2 are joined or approximated on the internal 

 margin, though the character is variable. Fringe mars l.'rown (I?., Ill, 13), not coiicolorous with 

 the lines. Hiiid wings paler than the fore wings, slightly glos.sy, powdered with brown scales most 

 thickly toward the outer margin. Below pale, the terminal area of fore wings shaded with 

 bright brown. 



Expanse of wings, 40-4.5 mm. (Dyar.) 



Larva before the last molt. — "Head and cervical shield jet black, shining. Body black, with 

 four equidistant sordid white stripes along each side, being as wide as the intervening si)ace.s, 

 except the dorsal sjjace, which is the widest. Body beneath coiicolorous with the ujiper side, with 

 three longitudinal stripes, and the intervening sjiaces much broader. On each of the fourth, lifth, 

 tenth, and clev'enth segments two reddish brown patches. Thoracic feet and clas))era of the 

 al)dominal legs jet-black, with their bases reddish brown. Tlie body is also sjiar.sely covered 

 with sordid white hairs. Length, about 30 mm."' (Beutenmiiller.) 



The larvaj were sent me by Mr. James Angus, and were received September 1. It feeds on 

 the walnut, and will eat the a.sh or rose. 



Full ijroirn larra. — Ijcngth, .'>0 mm. Head large, as broad as the body, entirely black, includin-g 

 the mouth parts. First thoracic segment with a distinct gamboge-colored transversely oliloiig 

 ]ilate, with three indistinct blackish clouds on it. The body is jet-black, with four continuous 

 whitish yellow very distinct stripes on each side, and a lifth broken one between the bases of 

 the legs, both thoracic and abdominal. The three upper stripes are equidistant, the upper or 

 subdorsal one being slightly wider than the others. The fourth strijie is on the lateral ridge, ami 

 is broader than the otlu^rs, and Mavy. The width of the dorsal black strijie is like that t>\' l> 

 perspicita. There is a median ventral whitish yellow strijje which ends before reaching the anal 

 legs. The thoracic legs are black, but gamboge-yellow at the enlarged fleshy base. The middle 

 abdominal legs are gamboge-yellow, each with a large external black patch above the ])laiita. 

 The two subdorsal \vhitish yellow lines end before reaching the suranal ])late, leaving a black 

 space; l,he plate is also black, and the anal legs are wholly black above and beneath and on the 

 sides. The head and body are clothed witii long white hairs, much longer and thicker than in T). 

 perspicita and longer than flic body is thick. 



