96 BULLETIN UNITED STATES GEOLOGICAL SURVEY. 



marked with dark brown on their anterior surfaces. Alar expansion four 

 lines. Bosque County, Texas. 



E. ? NIGRILINEELLA, M. S}). 



Of this also I have but a single specimen, aud place it provisionally 

 in this genus. The hind wings are a little wider than in the preceding 

 species. Head and palpi white, except that the second and third joints 

 of the palpi have each two small black dots on the outer surface; an- 

 tennae white. Thorax and fore wings white, with a short, blackish-brown, 

 basal streak, which diverges from the costa, and nearly reaches the fold, 

 aud then passes backward, nearly parallel with the fold, nearly to the 

 end of the cell and at a point nearly opposite to the beginning of another 

 costal black streak placed just before the cilia, and which passes back- 

 ward to the apex. The ornamentation of the fore wings is almost the 

 reverse of the preceding species — white when that is black, black when 

 that is white. Legs white, marked on their anterior surfaces' with 

 brown. Alar expansion three lines. Bosque County, Texas. 



ELACEHSTA. 



E. TEXANELLA, W. Sp. 



Sordid pale yellowish-white, immaculate, or with faint fuscous micro- 

 scopic dustings. Alar expansion nearly one-third of an inch. E. parvipul- 

 vella Cham, has wider wings, is more creamy- white, and is distinctly dusted 

 with brownish-oehreous, aud has the outer surface of the palpi brownish. 

 In texanella, the nenration of the hind wings approaches that of Cos- 

 mopteryx; the subcostal veiu passes straight through to the apical 

 part of the wing, where it is deflected to the dorsal margin; it has no 

 branches; the cell is unclosed; the median is furcate on the dorsal mar- 

 gin about the middle, aud there are two independent discal branches, 

 which are indistinctly continued through the cell. Submedi'an and in- 

 ternal distinct. Bosque County, Texas. 



E. STAINTONELLA, n. sp. 



White; the basal third of the costal margin of the primaries pale 

 ochreous, dusted with fuscous; apical half of primaries pale oohreous, 

 dusted with fuscous, with a narrow white fascia before the apex posteri- 

 orly angulated, or perhaps the wings are as well described as white 

 with the apex, a wide irregular band just behind the middle (widest on 

 the costa), and the basal third of the costal margin pale ochreous dusted 

 with brownish; the cilia also are somewhat dusted. Hiud wings pale 

 fuscous, with pale ochreous or grayish-ochreous cilia. Alar expansion 

 three lines. Texas. 



Fore wings. — The subcostal vein goes to the apex, emitting three 

 branches before the end of the cell, aud becoming furcate before the 

 apex; the median emits three branches before the end of the cell; aud 

 the fold is thickened. In the hiud wings, the subcostal and median are 

 each simply furcate. 



