THE CANADIAN ENTOMOLOGIST. 373 



frenulum." Since the frenulum is also present in Nyctobia, there remains 

 no difference whatever, exce])t in its longer palpi, and this does not, in 

 my opinion, warrant generic separation. In a recent List of Brit. Col. 

 Lepidoptera (Dept. of Agric, B. C, 1906), Rev. G. W. Taylor places this 

 species ui the genus Trichopteryx, Hub., but this is an error. The type 

 of Trichopteryx is carpinatj, Bork. {lobulata, Hiib.), in which vein 8 of 

 hind wings is widely separate from cell, but joined to it by a cross bar at 

 end.* In our species vein S anastomoses with cell its entire length. 



A NEW PLAT.EA, HER.-SCH. 



BY RICHARD F. PEARSALL, BBOOKLYN, N. Y. 



A recent paper on this genus by Rev. Geo. W. Taylor, defines 

 correctly the status of our species, as I believe, and renders unnecessary 

 the publication of a paper I had partially prepared, except as to the 

 addition of the species described herein. 



Plataa lessaria, n. sp. 

 Expanse, 22 mm. Head, palpi, antennae, thorax and fore wings a 

 clear pale lavender, the latter with black scales, basally clustered, 

 elsewhere scattering, strigate with brown along costa. The central band 

 is composed of dark brown, nearly black, scales along outline, fading 

 centrally to the ground colour, which surrounds the linear dark brown 

 discal spot. Its inner margin starts from costa one-fourth out, runs 

 outward across cell beyond the base of vein 2, then turns sharply backward 

 and downward to a point halfway between vein 1 and cell. Outer margin 

 leaves costa two-thirds out, makes a short curve inward across it, then 

 forms a short broad angle by an outward turn to vein 6, and with a long 

 inward curve reaches a point half way between veins i and 2, opposite 

 but a little lower than the inner line ; bottom truncate. Around this 

 irregular figure the ground colour is clearer, almost white, gradually 

 darkening submarginally into a broad pale brown line, its outer margin 

 darkest and sharply defined, commencing about one mm. from apex, 

 reaching the anal angle in two broad inward curves, the upper shortest, 

 its course parallel with the outer margin of central figure. Narrow sub- 

 marginal space darkest toward margin. Marginal line rather broad, dark 

 brown. A white line at base of fringe, which is outwardly checkered 



*See Meyrick, Brit. Lep., page 180, 1895. 



