136 THE CANADIAN ENTOMOLOGIST. 



is a new Plnsia, allied to alticola and the yellow-winged FAiropean species, 

 which I dedicate to its discoverer under the name of Plnsia Sackenii. It 

 is larger than its allies, and to be at once distinguished by the transverse 

 posterior line being inwardly bent opposite the cell. Fore wings dark 

 gray, with the median space below the median vein rich brown, reminding 

 us oi a))ipla. Interior line golden, arcuate, interrupted on cell, inaugurated 

 on costa by an interior golden patch. Cell shaded with light pinkish 

 gray. Reniform moderate, upiight, apparently open to costa, with fine 

 golden annulet, preceded by a dusky costal shade. Metallic mark smaller 

 than in allied forms, and o])en or v-shaped outwardly. Beyond it an 

 elongate pale golden spot separate. These metallic marks are set in a 

 richer brown. Transverse posterior line geminate, concave, slightly 

 trembled superiorly, below median vein (or rather vein 3) with a fine 

 golden interior line and edged by reddish brown on median space, while 

 there is a spot of same color outside the line at its rounded termination 

 near internal aiigle. Subterminal line indicated Ijy difference in shade 

 color, dentate. Hind wings light yellow above and below, with a 

 moderate black marginal band. Costa beneath somewhat brownish, and 

 a small discal dot is apparent; above the base is dusky and there is a faint 

 and narrow lunule. 



This species was taken at Idaho Springs, Colorado, on Aug. 15th ; the 

 specimen bears the number " 2." It differs strongly by the ornamentation 

 of the primaries from any known species of the yellow-winged group. Tlije 

 internal margin of primaries is more sinuate and the habitus is rather that 

 of mnpla and allied forms with dusky secondaries. The new species 

 expands 34 ipil. 



I avail myself of this opportunity to correct two errors in certain of 

 my previous communications. On page 89 of this volume I should have 

 given Prof. Lintner and not Mr. Hill the credit for the observation on 

 edusa and liinata. We owe very much to the patient investigations of 

 Prof. Lintner with regard to our moths, and I need no excuse to praise 

 his carefulness nor the superb condition of the Albany collections under 

 his charge. 



On page 106 a correction must be made : for vaiitalis, read rontalis. 



