44 BULLETIN 132, UNITED STATES NATIONAL MUSEUM 



27. Seven white geminate marks on costa (4) rana. 



Ten white geminate marks on costa 28. 



28. Alar expanse under 15 mm (1) bracteatana. 



Alar expanse over 15 mm (2) cornutana. 



29. Hind wing blackish brown, much darker than fore wing; liind wing cilia 



snow white with no dark basal band (18) grandicula. 



Hind wing brown, sometimes quite dark, but not distinctly darker than 

 fore wing ; cilia more or less white but always with dark basal band- 30. 



30. Fore wing with a pair of mid dorsal metallic geminate marks (or a single 



metallic spot) fusing above with a similar pair from costa beyond base 



to form a faint but distinguishable angulate metallic fascia - 31. 



Fore wing without such 33. 



31. Hind wing with veins 8 and 4 imited (5) inopiosa. 



Hind wing with veins 3 and 4 connate or stalked 32. 



32. Fore wing with median brown area between costa and dorsum heavily 



dusted with black ; outer half of costa with four to six whitisli geminate 



dashes; alar expanse less than 12 mm (15) youngana. 



Fore wing with scales of median brown area between costa and dorsum 

 tipped with ochreous, no appreciable black dusting ; outer half of costa 

 with eight or nine whitish geminate dashes ; alar expanse 12 mm. and 



over (17) candana. 



38. Termen of fore wing concave; veins 8 and 4 bent upward at middle; hind 



wing whitish on costa (10) caryana. 



Termen of fore wing convex ; veins 8 and 4 not bent upward at middle ; 

 hind wing not whitish on costa (16) nigrlcana 



1. LASPEYRESIA BRACTEATANA (Fernald) 

 (Figs. 311, 312) 



GraphoUtha bracteatana Febnaxd, Rep. U. S. Dept. Agr. for 1880, 1S81, 



p. 265. 

 Enarmonia bracteatana Febnald, in Dyar List N. Amer. Lepid., no. 5271, 



1903. 

 Laspeyresia bracteatana Barnes and McDunnough, Check List Lepid. 



Bor. Amer., no. 7222, 1917. 

 Laspeyresia palUdibasalis Heinbich, Proc. U. S. Nat. Mus., vol. 57, 1920, 



p. 60. 



When I described palUdibasalis I distinguished it from bractea- 

 tana by its size and a difference in genitalia. In a large reared series 

 the specimens averaged larger than Fernald's types and showed a 

 deeper emargination of the harpe. These differences, I am now con- 

 vinced are not significant. The Fernald types are runted specimens ; 

 and while they differ from typical, or average pallidibasilis, in the 

 characters mentioned, they do agree very well with occasional small 

 specimens of the latter. I am therefore sinking my name. 



Male genitalia figured from paratypes of bracteatana and palUdi- 

 basalis in the National Collection. These photographs show the ex- 

 treme differences in harpe shape. Cornuti a dozen or more short 

 fixed spines arranged in a row. The female genitalia are as in varie- 

 ty cornuta/na Dyar. 



