"lines Silliil*'" ; "s.l. Sparc (larlv I'ld ami cun I f.asl iiii;' pale Icniiinal." 

 All of llifsc fliarailrrs arc In In- lOiiiid in \\(slciii " phicuhi ." ()iily 

 \(r\' occasionally ai'c llicy all foiiiid in I lie one spcciiiK ii. The 

 aullior has hcl'on- him a female specimen from I he Snow ( 'ollect ion, 

 marked "AiiTccs with Type. (i. 1'". H. " (Sir (M()rL;c Ilampson). 

 'J'liis was |)rol>al)Iy one ol the original I \ pe lol. Aiiolher (oloi-ado 

 specimen approaches it closely cxci pi LhaL Ihc lines arc doubli;. 

 This spet'imen was com])arcd with I he "Cotype" in I he Snow Col- 

 lection by Dr. MeDunnougli. The autlior ha.s a female specimen 

 from Wallace. Idalio, which is almost identical with the last men- 

 tioned, Init is darker in color. Some males from Wallace, Idaho, 

 are transitional forms between placida (Eastern) and minimal is, 

 showing in a series all the peculiar characters assigned to that 

 "species." The genetalia of three of these were examined, and 

 except for minor individual variation, found practically identical 

 with Eastern placida. Minimalis is simply an aberration with sin- 

 gle lines, and of the lighter shade ("reddish") more common in 

 the females of the group than the males. 



GROUP NEFASCIA 



This is a more or less heterogenious group; distinguished by 

 the smooth thorax and collar; antennae ciliated with longer setae 

 to the joints and with the orbicular small and round, usually clearly 

 outlined. The reniform is moderate to small, and tyj)ieally kidney- 

 shaped. Species in this group are very likely to be confused and 

 are best separated on genitalic characters. The superficial key will 

 serve to place typical sj^eeimens. 



SupERnciAL Key to the Nefascia Group 

 I. — Color some shade of yellow or orange, thorax much 



darker duanca 



II. — Not so,- — collar and thorax eoneolorous, 



A. — Small, (size of placida); color always dark; wings 

 very narrow and elongate; orbicular minute, ringed 

 with whitish ; wings very smoothly sealed, with a 

 pronounced satiny luster ;often slightly tinged with 

 rufous; a very "clean-cut" appearance, male and fe- 

 male identical — (aberrant) duanca 



B.- — Typically small, wings with a banded appearance due 

 partially to dark filling in of s. t. space ; wings not 

 smoothly scaled ;appearance not as clean cut due to 

 a general scattering of dark scales over the gvonnd.nefascia 

 C. — Size moderate, resembling small suffused alternataj 

 maeulation usually not as plain as nefascia; orbicu- 

 lar usually minute; ground color dull gray to red- 

 dish forbesi 



T). — Size moderate to large; male resembling large 

 nefascia J female resembling either large nefascia or 

 alternataj antennae at base so heavily sealed setae 

 and cilia are obscured barnesi 



