288 



6. R and R, of primaries short stalked, R.^ stalked with R^, R^ absent 



Pselnophorus 



R.^ free, R., and R^ stalked (sometimes only connate?) 7 



7. Secondaries with a tuft of black scales near tip of third feather 



Pterophonis 



No such tuft 8 



8. Secondaries with only two veins in the second lobe Adaina 



With three veins 9 



9. Fringes of inner margin of third lobe of secondaries with a few black 



scales (sometimes faint in our species) Exelastis 



These fringes without black scales Marasmarcha 



II). R„ R^ and R^ stalked Pterophorus 



All branches of radius separate 10 



11. Secondaries usually with black scales in fringes of inner margin. Anal 



angles of both lobes of primaries usually prominent Platyptilia 



Without black scales. Anal angles marked, but very retreating. . Stenoptilia 



Genus Trichoptilus Walsingham. 



Haplotype Trichoptilus pygmacus Wlsm. 



Trichoftilus Walsingham, Pter, Cal. Ore. 62, 1880. Pyijmaetis sole species. 



Mcyrick, Trans. Ent. Soc. Lond. 1886, 7, 1886. 



Id., op. cit., 484, 1890. 



Femald, Smith's List Lep. Bor. Am. 88, 1891. 



Tutt, Pter, Brit. 77, 1891. 



Hofmann, Deutsch., Pter,, 49, 145, 1895. 



Meyrick, Handbook, 430, 1895. 



Fernald, Pter, N. A. 13, 1898. 



Id., Bull. 52, U. S. N. M. 441, 19(12. 



Tutt, Ent. Rec. XVII, 36, 1905. 



Meyrick, Trans. Ent. Soc. Lond. 1907, 472, 1908. 



Id., Gen. Ins., C, 3, 4, 1910. 



Id., Wagner's Lep. Cat. pars 17, 3, 1913. 



Walsingham, Biol. Cent. Am., Lep. Het. IV, 434, 1915. 



Barnes & McDunnough, Check List 150, 1917. 

 Bucklcrki Tutt, Ent. Rec. XVII, i7, 1905. Orthotype Pterophorus patudnw 



Zell. 

 Stangeia Tutt, Brit. Lep. V, 492, 1906. Haplotype siccliota. 



Id., Ent. Rec. XX, 53, footnote, 1908. Cites siccliota as type. 

 Forehead without tuft; ocelli obsolete. Labial palpi moderate, ascending. 

 Second joint with a terminal tuft beneath in some species; third joint variable 

 in length, slender. Fore wings cleft from before middle, both lobes slender, 

 tapering, without anal angle; Cu„ absent or stalked with M.,; Cu, absent; M^ 

 and M scarcely traceable, short; R. long, R., absent, R,. absent nr stalked with 

 R , R separate or stalked with R^. Secondaries trifid, third feather usually with 



