3 60 



Aciftilia Huebner, Verz. bek. Schmett. 430, 1826. 



Meyrick, Trans. Ent. Soc. Lond. 9, 1886. 



Tutt, Pter. Brit. 137, 1891 (in part). 



Hofmann, Dcutsch. Pter. 50, 182, 1895. 



Tutt, Ent. Rec. XVII, 35, 1905. Fixes type. 

 XAciptilus Zeller, Isis X, 768, 1841. 



Wallengren, Skand. Fjar. 23, 1859 



Zeller, Stett. ent. Zeit. XXVIII, 338, 1867. 



Jordan, Ent. Mo. Mag. VI, 150, 1869. 



Tutt, Ent. Rec. XVII, 35, 1905. 

 Merrifieldia Tutt, Ent. Rec. 37, 1905. Orthotype Iridactyta Linn. 

 Porritia Tutt, op. cit. 37, 1905. Orthotype galactodactyla D. & S. 

 VVheekria Tutt, op. cit. 37, 1905. Orthotype spilodactyla Curtis. 



Front rounded, without tuft. Ocelli obsolete. Labial palpi moderate, 

 slender. Forewings bifid, cleft from near middle, lobes slender; vein Cu„ in 

 our species from near angle of cell, obsolete toward inner margin; Cu^ absent, 

 M to end of second lobe. R,, to apex of first lobe, remaining branches absent. 

 S. C. to middle of costa. Secondaries trifid; third lobe without black scales 

 in fringes; Cu,, from middle of cell, Cu, absent. (See pi. XLVIII, fig. 6.) 



The synonymy of this genus involves one of the most peculiar 

 nomenclalorial tangles which has come to our attention. In using 

 Pterophora in the "Tentamen" with pentadactyla as the sole species, 

 Huebner actually made a new genus, which would stand in this family 

 together with PteropJiorus Geoff., according to a literal interpretation 

 of the International Rules. This is so highly absurd that we prefer 

 to depart from the rules and regard Pterophora as an emendation. 

 It was probably so intended, though there is nothing in the "Tenta- 

 men" to indicate this. 



The remaining genera involve only the establishment of the first 

 type fixation, with the exception of Tutt's. We follow Meyrick in 

 assigning these three here. 



Of the four species usually referred to this genus in our fauna 

 two belong in Adaina and one in Pselnophorus, leaving only zvalsiiig- 

 hami. This species is conspicuously distinct from all of our others. 

 The long and very slender lobes of the primaries alone suffice to dis- 

 tinguish it, except from Trichoptilus. 



1. AciPTii.iA WALSiNGHAMi Fernald. PI. XLI, fig. 18. PI. XLIX, 

 fig. 17. 



Alucita walsingliaini Fernald, Pter. N. A. 36, 1898. 

 Id., Bull. 52 U. S. N. M. 444, 1902. 



