North American Tortricidce. 141 



Semasia, Stepli. 

 1 Semasia corculana, Zell., var. 



These specimens differ from the type (now in my 

 possession), which is from Vancouver, in the fore wings 

 being more or less suffused with blackish scales, and in 

 the deep blackish fuscous hind wings with dull ochreous 

 fringes. Californian specimens are almost exactly inter- 

 mediate between the two extreme forms, which, without 

 these connecting-links, I should certainly have regarded 

 as distinct. 



If they may be correctly referred to the same species 

 they supply a curious exception to the usual habits of 

 variation among Lepidoptera, the more northern varieties 

 being usually found to be the darkest. It is possible 

 that they may belong to a distinct species, but this can- 

 not be safely asserted until a larger number of good 

 specimens are available for comparison. 



The wide range of variation observable in European 

 specimens of Semasia aspidiscana from different localities 

 leads me to entertain some doubt of the distinctness of 

 Zeller's corculana from that species. I have received 

 from Mr. C. G. Barrett examples of asjndiscana which 

 are indeed scarcely distinguishable from Zeller's type. 

 The matter requires further study than I can devote to 

 it for the purposes of this paper. 



Semasia ochreicostana, n. s. (PL IV., fig. 13). 

 Palpi short, pale ochreous, tinged with ferruginous at the sides, 

 the apical joint scarcely visible among the projecting scales of the 

 2nd joint. Head ferruginous. Antennae ferruginous at the base, 

 dull brownish fuscous beyond. Fore wings (with the costa almost 

 straight, the aj^ical margin oblique, slightly concave) pale ochreous, 

 overshadowed, except along the costal third, by a dull greyish fus- 

 cous shade, which extends also over the thorax. The outer third of 

 the wing bright reddish ochreous, containing five minute paler 

 costal marks, from the first of which a silvery metallic streak runs 

 obliquely outward to the upper edge of the ocelloid patch ; from 

 the second a similar but larger and more oblique streak runs 

 around the upper and outer edge of the ocelloid patch nearly to the 

 apical margin, where it meets a shorter and straighter metallic 

 streak coming from the' fifth pale spot near the apex. The third 

 and fourth of these pale spots lie within the angle formed by two 

 metallic lines, the fourth having also a few metallic scales attached 



