510 William T. M. Forbes 



fold; usually with a more or less complete subterminal series between the veins. 

 Hind wing nearly concolorous. 15-20 mm. 



August. This species looks like a Bactra, superficially. 



New Jersey to Wisconsin. 



21. P. louisiana Busck. Larger than P. romonana. Straw yellow, brighter than 

 P. romonana,; markings deep ochre or yellow-brown. Base somewhat dark-shaded, 

 especially at margins; median fascia running from middle of costa to inner margin 

 one- third way out; somewhat bent and widened at cell, where it is paler, some- 

 times hardly darker than the ground; a small brown spot on inner margin at two- 

 thirds; subterminal fascia narrow, irregular, and broken, sometimes suffused, 

 sometimes with its lower end connected with the outer spot on inner margin; 

 set well back from outer margin. Fringe pale. Hind wing gray. 



May to July. 



Illinois; Missouri, Utah; New York: Ramapo (Kearfott). 



22. P. romonana Kearfott. Straw yellow, marked with light olive brown; base 

 somewhat darkened, or with an oblique bar extending up from basal angle; median 

 fascia narrow on costa and at inner margin; more than twice as broad at middle 

 of wing; the inner boundary nearly straight except at costa; the outer boundary 

 outwardly oblique to end of cell, then angled or sharply bent and inwardly oblique 

 to inner margin. An oblique fascia from costa at three-fourths way out toward 

 outer margin, fading out below. Some confused marks on inner margin, and 

 sometimes a distinct spot at two-thirds way to apex. Fringe concolorous; hind 

 wing gray. 8-14 mm. 



August. 



New Jersey to Maryland and Manitoba. 



23. P. hospes Walsingham. Ochre yellow; median area mixed yellow -brown and 

 deep purple-gray, in varying proportion, especially toward the costa, forming a 

 large triangular patch, starting narrowly at middle of costa and covering middle 

 half of inner margin. Outer part with a curved yellow-brown shade starting from 

 costa half way between the median patch and the apex, and joining the patch just 

 below the cell. Fringe paler yellow. Hind wing brownish gray; the fringe a 

 little paler, with a distinct dark line in its base. 10-15 mm. 



August. 



This form is straminoides, as identified by Busck, but Grote's original descrip- 

 tion applies better to the following form. 



New Jersey to North Carolina and Wisconsin. 



24. P. straminoides Grote. Ground light straw yellow; median fascia broad, 

 oblique, narrowing somewhat to costa, from rather before middle of inner margin 

 to rather beyond middle of costa; typically red-brown on dorsal half, becoming 

 olivaceous and tending to fade out toward costa; sometimes entirely gray-brown. 

 Outer part of wing broadly shaded with brown or olivaceous, with some blackish 

 striae along costa. Hind wing light gray. 9-15 mm. (schwarziana, Busck, zwacana 

 Kearfott) . 



Both names seem to apply to the form with the red-brown median fascia. 



New York to Maryland and Illinois. New York: Buffalo, Ithaca, Trenton Falls. 



25. P. plummeriana Busck. Similar to P. straminoides; rather brighter yellow, 

 with apex of fore wing shading into a distinct red-brown patch. Hind wing white, 

 nearly immaculate. Probably an extreme form of straminoides. 13 mm. 



June. 



Maryland to Illinois. New York : Peru. 



Number 26 is vacant. 



27. P. viscana Kearfott. Base of wing powdery gray; middle of costa fuscous; 

 a chocolate-brown median shade, not reaching the costa; outer half of wing bright 

 pink, crossed by a red-brown fascia aeross the apex; fringe bright ochre yellow, 



