1873.] 37 [Packard. 



The inner line is often obsolete, or represented by a few spots ; the 

 outer varying in depth of color, usually but little darker than the 

 brown portion beyond. Hind wings sometimes yellowish, with a brown 

 line. A large ? from California, received from Mr. Behrens, differs 

 from the others in having the outer line on fore wings obsolete between 

 the median vein and the costa, and the lines brown, and hind wings 

 more yellowish and speckled with brown scales. 



In a single <3 specimen from California, the costa of fore wings is 

 arched, the wings being much broader and fuller; a distinct dark tri- 

 angular costo-apical spot, while the base of costa is reddish, the 

 secondaries much more rounded, and the line nearer the middle of 

 the wing, and distinctly scalloped, but I judge the three forms to be 

 simple local varieties, as the markings vary considerably in this genus. 

 The five Nevada individuals are smaller than the others, and with 

 narrower wings. This species differs from Sicya truncataria Gn., 

 which it very closely resembles, in the more sinuate outer line on the 

 fore wings, while the margin of the wing is deeper brown. Whether 

 these differences are permanent cannot be determined unless we 

 have more material. 



Hesperumia n. gen. 



Closely related to Angerona, agreeing with it in the strongly pec- 

 tinated antennae, the branches reaching to the tip, and in the large, 

 well developed head, which is quite free from the thorax; the palpi 

 much the same, but a little larger and blunter. Fore wings more 

 pointed at the apex, and less angulated in the middle of the outer 

 edge. The subcostal venules are shorter, sent more direct to the 

 costa, and the costal interspace narrower than in Angerona. Hind 

 wings full, not sinuate, the sinus being almost obsolete. Hind legs 

 as in Angerona, the spurs of the same relative size. The female is 

 much smaller than the male, while in Angerona the female is consid- 

 erably larger than the male. In its mode of coloration this genus 

 recalls R umia, hence our generic name. 



Hesperumia ochreata n. sp. 



Deep ochreous, with brown flecks,' and a large discal ring. Head 

 ochreous, becoming reddish on the sides and anterior edge of the 

 front; palpi dark brown, especially on the tips, with ochreous hairs 

 at base on under side; antennae, brown, concolorous with the palpi. 

 Front of the thorax deep ochreous, hinder portion, abdomen and 

 legs much paler. Fore wings deep ochreous, more or less flecked with 

 brown, sometimes the flecks are wanting; two lines, one crossing the 



