U5 



ACIDALIA IJUADKILINEATA, .s;^ //ov. I'lillc 10, 111,'. 64. 



<S (f ;iii(l G 9. — Fori" willies less acute iiuil liiiid \\iiii,r> lr>s aiii;lcil lliaii 

 '\\\ A. emtclmta. Fionl lilack, cxI rcuic odgc paler. J'alpi lalliei- lait^e. Iieavier 

 tliaii usual, iirojecliui;- \v<'ll lieydiid the IVont, and lilackisli al)()ve. Aiileiiiuc 

 of male whitish al)()ve, l)ciieatii testaceous, with a minute iViniie. Wiiifj.s 

 white, peppered over with hlack scales, witii souuMiines five (usually three) 

 rather broad, pale-oclireous;, oblique, lirni lines, the marginal one curved and 

 parallel with the edire of the wing; costal bordei- ochreous; I'rinifc long, 

 ochreous at l)ase. The same arrangement ol' lour lines on the hind wings, 

 the lines being very ecpial in size, thrc'c ol' them being a little Ijroader and 

 more difUise than the [)asal one. Beneath, the wing is sni)ochre()us on tlu' 

 costal and outer edge, usually with a dark scallo[)ed lin<' common to both 

 wings, and situated half-way between the discal dot and outer edge. Legs 

 white, fore legs brownish. Hind til)i;e ilattened and swollen, but less so than 

 in A. cnucleata., while the tarsi are two-thirds as long as the til)iie. 



Length of body, <?, 0.38, 9, 0.;i5 ; of fore wing, J, 50, 9, 0.50; 

 expanse of wings, LOS inches. 



Orono, I\[e., July 4; Brunswick, Me., July 10; Salem, Mass. (Packard, 

 Mus. Peab. Acad. Sc.) ; White Mountains, N. H.; Mount Washington, July 7 

 (Sanborn, .^Lis. Bost. Soc. Nat. Hist.) ; White IMountains, N. H., July 20-30 

 (Scudder) ; Mount Washington, N. H., July (Morrison). 



Brookline, ]\Liss., June 4 ; Cambridge (Shurtleff, Mus. Bost. Soc. Nat. 

 Hist.) ; Central Missouri, April (Riley) ; Michigan (Miles). 



This moth, where it occurs, is fully as common as A. enucleata^ ])ut 

 seems more restricted to the Northern States. It differs from A. cnucleata, 

 to which it is nearest allied, by its smaller size, the much longer hind tarsi 

 and shorter tibia-, the less pointed and angiilated wrings, by the want of any 

 discal dot and marginal black dots, while the extradiscal line is lirni, not 

 waved. It varies much in the number of the lines, there being often only 

 three lines on the fore wings and three on the hind wings, and sometimes 

 the lines are nearly effaced. It difl'ers from Walker's description of yJ. resfric- 

 tata in wanting any discal dots or submarginal lines, and in its smalhn- size. 

 On a comparison with Mr. Walker's type o'i A. restr'irtatd, kindly nuide lor me 

 by Mr. Charles 0. Waterhouse, assistant in the British i\hisenm, it proves to 

 be different. Mr. Waterhouse writes me that it "diifers from the specimens 

 [of yl. quadrillneat(i\ sent, in having the apical of the three transverse l)ands 

 44 r II 



