182 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxv. 



On the under side the range of variation is greatei, no two examples 

 being quite alike in the amount of black on primaries. In this point 

 also the species agrees well y^iih. jmUens rather than luteojKillens. 



LEUCANIA OXYGALE Grote. 



Heliophila oxygale Grote, Can. Ent., XIII, 1881, p. 14. 

 Leucania oxygale Smith, Bull. 44, U. S. Nat. Mus., 1893, p. 185. 



Ground color a very pale creamy, overlaid with gray, giving the 

 impression of a pale luteous gray or dirty pale clay yellow. Head 

 and thorax immaculate. Primaries with the veins paler and the usual 

 dark strigations in the interspaces, but so little contrasting that the 

 wings seem almost immaculate. The median vein is only a little paler 

 and the dot at the end of the cell is very small or altogether wanting. 

 So the transverse posterior line consists at most of two black venular 

 points, and may be altogether wanting. Secondaries either uniformly 

 smoky, or the margins may be paler and the veins darker; alwa3^s with 

 a large area of the disk blackish. Beneath, white, more or less black 

 powxlered or with smoky suffusion. The primaries ma}^ be blackish, 

 except at the margins, and they ma}^ be black shaded only over the 

 discal area at the end of the cell. Secondaries usually with only a light 

 powdering of blackish scales, a small black discal dot, and a narrow, 

 yellowish-tinted marginal area; rarely a large part of the discal area 

 is blackish. 



Expanse.— \.'2h to l.-iO inches (31 to 35 mm.). 



IlaVdat. — Alameda County, California, in June (Koebele); Los An- 

 geles, California, May 15 (Smith); Palo Alto, California, April 30, 

 Middle California (Barnes); Sierra Nevada, California (Hy. Edwards); 

 Beulah, New Mexico, July 11, 18 (Cockerell); Salt Lake Utah (Hy. 

 Edwards); Denver and Glenwood Springs, July 1 to 7, Colorado 

 (Barnes). 



Fourteen examples are under examination. It is the least con- 

 trasting of the species in this group, and the least variable in conse- 

 quence. The black dots on the primary are never very strongly 

 marked, but any one or all of them may be absent. Some specimens 

 have quite a clear creamy-yellow tint, but the majority has a dirty 

 gray addition that dulls the color. 



While the range in size brings this species only a little above 

 minorata, yet, as a matter of fact, most of the specimens exceed 1.30 

 inches and nearly or quite reach 1.35 inches, while in minorata the 

 smaller num'oer reach 1.30 inches, and very few indeed exceed it. 



LEUCANIA RUBRIPALLENS, new species. 



Ground color dull reddish luteous. Head and thorax immaculate. 

 Primaries with the streakings well marked, though not much contrast- 

 ing; median vein usually relieved by a darker shade l)eneath it. Dis- 

 cal black dot very small or entirely absent. The two dots indicating 



