MEMUIKS OF THE NATIONAL ACADEMY OE .SCIENCES. 103 



AnUola pellucida Grote, Proo. Ent. Soc. Pliil., Ill, p. 93. June, 1864. 



Anisota pdlucidd P.\CK.\nn, Proc. Ent. Soc. Phil., Ill, p. 38."). Nov., 1864. 



Atmota rirginiensii: P.uk.\ui>. Proc V.nt. Sur. Phil., Ill, p. .'58."). Nov., 1864.— Fifth Pep. V. S. Ent. Coinm., 



p. 127. 1890. 

 Adelocephala pellucida Boisniv.vi., Annales Soi'. Ent. Belgique, XV, p. ST. 1872. 

 Anisota rirriiiiieiwi' Kirbv, Syn. Cat. Lfj). Het., I, p. 739. 1892. — Nei.mogen and Dv-\u, .lourn. New York Ent. 



Soc, IT. p. 148. Dec, 1895. — BEUTEN.MrLLEK, Cat. bombycine nmths New York, p. 440. 1898. 



Larva. 

 (Pis. IV, V, iig.s. 1-.^: XXIX, L, tijrs. 1-ld, LII, figs. 1-lc) 



Smith-Abbot, Nat. Hist. Lep. Ins. Georgia, p. lib, Tab. 58. 1797. 



Harris, T. W., Treati.«e Ins. inj. veg. 3tl edit,, ]». 407. 



Riley, C. I'., in Packard's Insects Inj. Forest Trees, p. 127. 1890. 



French, G. H., Rep. Curator Mus. S. 111. Normal Univ. 1880. 



Packard, A. S., Fifth Rep. U. S. Ent. Comni. Insect-s Inj. Forest Trees, p. 127. 1890. 



Lugyer, 0., Bull. 10. Agr. i;xpt. Station Minnesota, PI. I, fig. 3. 1890. 



Beutenmi'dhr, IF., Cat. bombycine moths New Y'ork, p. 441. 1898. 



Imago. — 5 cJ , 5 $ (and many other.^^ oliserved). 



Male. Antenna? bipectinated a little beyond the middle, beyond filiform; as usual in 9 

 simple. Fore wings regularh' triangular and smaller proportionally than in any of the other 

 species; costa straight, curved towai'd tlie subacute apex, outer edge very oblicjue. not full and 

 convex as in S A. senatoria. but straight and nearly one-third longer than the inner edge; the 

 inner angle less rounded than in $ A. senatoria; middle of the wing transparent from the discal 

 spot outward to the hinder part of the outer edge and efl'acing the extradiscal line, except toward 

 the apex. Discal spot nearly twice as large as in A. senatoria and «ti(//iia, being roiuid or subovate. 



Hind wings regularly triangular, costa very full; inner angle produced almost into a sort of 

 lobe and reaching to the outer third of the abdomen; the outer edge very oblique, either a little 

 convex or even slightly concave; innnacidate, not usually, if at all, speckled, and with no extra- 

 discal line. 



Under side of wings: An extradiscal line common to both wings, though on the anterior 

 pair etl'aced over the hyaline area; on the hind wings broad and difiuse, sometimes wanting. 

 Discal spot faintly reproduced, the color paler than above. 



Female. Wings not so broad as in ^1. si/iafo/u'a. hut of the same general shape as in A.sena- 

 toria. etc. In color, while the squamation is thin, as in A. nciuitoria, the wings both at the base 

 and on the outer margin are more lilac or purple and less ocherous, while the wings are less 

 speckled than in A. vfigma and xisinitiirla. the outer edge not l)eing spotted. Extradi.scal line dif- 

 fuse, not very distinct or dark. Discal spot slightl}' larger than in ^-1. Ktujma and senatoria., 

 under side pale ocherous; outer edge of both wings deeper lilac than in A. stigma and ^4. senatoria. 

 Hind wings more convex toward the base of the costa than in any of the other species. Beneath 

 not spotted. The abdomen is much paler than in i . 



Expanse of fore wings $ 40— 42 mm-. ; 9 50 mm. Length of a fore wing S 18-20 mm.; ? 

 26 nun. Breadth of a fore wing $ 8-9 mm.; ? 1.3 mm. Length of hind wing S 11-12 mm.; 9 

 17 mm. Breadth of hind wing S 7-8 mm. ; 9 11-12 mm. 



This species ditiers markedh- from any of the others in the characteristics of the male, whose 

 narrow fore wings are regularly triangular, while those of the hinder pair are triangular, much 

 rounded on the costa, with the inner angle produced, almost into a lobe. The S is thus the most 

 divergent of any species of the genus, but in the shape of the wings only. Another characteristic 

 is the thinness and transparency of the fore wings beyond the discal spot, which is larger than in 

 any of the other species. The less divergent female differs from those of A. stigma and ^4. sen- 

 atoria in the stronger lilac hues and in the absence of the duskj' strigse. 



"Moth. — Besides being smaller, the male differs from those of A. stigma and senaloria in the hind wings being 

 distinctly triangular, the outer edge being straight, and the hind angle somewhat produced; the fore wings are also 

 decidedly narrower, while the white discal spot is considerably larger, and the wings are throughout considerably 

 darker and free from dark spots. Expanse of wings of male, 40 mm." (Riley). 



