336 GEORGE D. HULST. 



gulate ; the costal and outer sliadiugs are heavier, the outer space sometiiiies 

 being well darkened; the hind wings are slightly wavy margined, not angulate 

 as in D. festa ; beneath as D. feMa, but ochreons, and with shadings much inten- 

 sified. 



Three females, Colorado. The .specimens differ considerably, one 

 having the outer margin nmch darker than the others, and one hav- 

 ing the ground color a bluish gray, as in D. festa. I would regard 

 them as varieties of /esto, were it not for the marked difference in 

 the shape of the hind wings. 



16. MYCTIPHAXTA u. gen. 

 Type Uetuki Hulst. 



Palpi quite shoi't, porrect, loosely scaled below ; tongue weak, not 

 more than one half thorax ; front loosely hairy scaled ; antennte 

 bipectinate to apex ; thorax and abdomen smooth. Legs smooth, 

 rather long; hind tibiae not swollen, without hair pencil, and with 

 two pairs of spurs in both sexes; fore wings 12 veins, with fovea at 

 base in % , 6 at a point with 7, 10 and 11 from cell ; hind wings, 

 veins 3 and 4 separate, (5 and 7 stemmed, 5 undeveloped. 



Distinguished by the stemming of H and 7 in the hind wings, a 

 phase of structure very rare among the Ennominse. 

 kSpecies. — N. Icetula Hulst, n. sp. 



M. Isetllla n. sp.— Expands 40 mm. Palpi yellow ocher; front yellow ; an- 

 tennje dark fascous; thorax anteriorly bright yellow, ocher posteriorly. Abdo- 

 men ocher; fore wings bright yellow, the color more decided basally and along 

 costa: a broad basal cros.s-line, faint purple; an outer cross-line, more distinct 

 purple, parallel with outer margin; hind wings very even bright o(dier color; 

 beneath fore wings as above, more ocher in color, the basal cross-line wanting, 

 the outer distinct purple ; costa stained with broken fuscous : hind wings brigliter 

 yellow than above, except along anal margin, with a few scattered brown spots, 

 and a broad uneven outer brown line; discal spots apparent, large, and decided 

 on hind wings. 



Ariz.ona, one male. 



17. AI*OL,KMA n. gen. 

 Type carata Hulst. 



Palpi rather long, slender, subascending ; tongue developed ; front 

 probably scale tufted ; antenuie of $ flattened, naked, segments 

 close and even ; thorax smooth. Legs smooth, hind tibiie not swol- 

 len, without hair pencil, and w'ith two })airs of spurs in both .sexes; 

 fore wings subangulate, falcate, rather narrow, with fovea at base in 

 (? , 12 veins, (> sejjarate, 10 and 11 from cell; hind wings slightly 

 rounded in below anterior angle, then sinuate, 6 and 7 se})arate, 5 

 undeveloped, 8 separate from cell. 



