132 Journal New York Entomological Society. [Voi. xv. 



Food plant, Baptisia tinctoria. 



Pupa and cocoon same as the usual forms. The first specimen of 

 this variety of A. io, found by me was a female which I now have in 

 my collection. The second was also a female which I secured alive 

 July 3, 1906, and from which I got about ninety-five eggs. From 

 these eggs I received about the same number of larvae which I fed on 

 wild cherry. The larvae all lived until after the second molt, when all 

 of them died, apparently from some bacterial disease or on account of 

 wrong food plant. July 14, 1906, I found a brood of twenty-nine jo 

 larvfe on Baptisia tinctoria, which I fed on this food plant. In Sep- 

 tember, 1906, I got from the cocoons under usual conditions, five 

 males and two females. I am now getting, February, 1907, some 

 specimens of this variety by forcing the same. 



Type. — No. 10274 in the U. S. National Museum. 



A GENUS AND SPECIES OF GEOMETRIDiE NEW 

 TO NORTH AMERICA. 



By Richard F. Pearsall, 

 Brooklyn, N. Y. 



The genus TricJiopteryx Hiibn. has not before been represented in 

 the North American fauna, though several species are found in Europe. 

 In a recent ''List of British Columbian Lepidoptera," the Geo- 

 metridte were arranged by Rev. Geo. W. Taylor, who places under 

 this genus Nyctobia viridata Pack. {Agia eborata Hulst.); but it 

 cannot rest in the genus for reasons I have stated in a paper on the 

 genus Nyctobia Hulst., awaiting publication. The type of Trichop- 

 teryx is carpinata Bork., in the (^ of which vein 8 of hind wings is 

 connected by a bar with cell, near the cell's end, and in inridata it is 

 united with it for nearly the cell's length. The genus is thus 

 characterized. 



Trichopteryx Hiibn. 



Type ca7-piiiala Bork. 

 Fixed. Variable. 



AnteiincE, flattened, slender. Thorax, with low tuft posteriorly. 



Palpi, short. Abdomen, not tufted. 



Front, protuberant, smooth. Venation of hind wings, $, six and 



Tongue, developed. seven widely separate. Three and four 



