P^DISCA. 49 



a subconvex appressed costal fold near the base — fawn- coloured ^ profusely irrorated with 

 greyish shining scales assuming the form of wavy lines, one of which runs parallel with and 

 near to the apical margin ; the cilia fawn-colour : underside of fore wing much shaded with 

 pale brownish fuscous. Abdomen and hind wings pale greyish fuscous, the latter above some- 

 times shaded along the margin, with paler cilia, beneath greyish white, reticulated with 

 brownish fuscous along the costal margin. 5 J* • Expanse of wings 28 millims. 

 Mendocino County, June 7th-10th, 1871. 



Psedisca perdricana. (Plate LXXI. fig. 6.) 



Head, palpi, and thorax pale fawn-colour ; antennae the same, pubescent. Fore wings — 

 with the appressed costal fold near the base irrorated with fuscous — very pale fawn-colour, 

 irrorated with numerous brown and fuscous scales, which have a tendency to run in wavy 

 lines, first sloping obliquely outward from the costa, then turning parallel to the apical 

 margin ; there are a few single black scales above the anal angle. Hind wings pale fuscous 

 brown, with paler cilia. 3 c? • Expanse of wings 19 millims. 



Burney Falls, Shasta County, July 20th, 1871. 



Nearly allied to P. irroratana, but a much smaller species, and without the lustrous 

 scales which distinguish it, otherwise greatly resembling it in general appearance. The di- 

 stinction between the two species appears to be that in P. irroratana the ground-colour of the 

 wing is dark with paler markings, whereas in P. perdricana the ground-colour is pale and the 

 markings are darker. 



Paedisca passerana. (Plate LXXI. fig. 7.) 



Head cinereous brown above, face ochreous white ; palpi cinereous, thickly clothed, espe- 

 cially beneath, apical joint not exposed ; antennae greyish fuscous ; the patagia dusty whitish. 

 Fore wings — costa slightly arched, apical margin oblique — greyish white, streaked, shaded, 

 and blotched with dull brown ; a brown half-fascia from the dorsal margin near the base, 

 another usually wider from the dorsal margin beyond the middle ; a dull brown shade along 

 the costa and at the apex, in which are several geminated costal streaks of the pale ground- 

 colour ; a pale greyish rather shining spot above the anal angle, divided by an irregular brown 

 streak. Hind wings brown, with paler cilia. 4 c?. Expanse of wings 15 millims. 



Mendocino County, California, June 9th & 10th, 1871. 



PsBdisca glomerana. (Plate LXXI. fig. 8.) 



Palpi extending more than the length of the head beyond it ; the second joint clothed 

 with long scales ; the apical joint freely exposed ; together with the head dull greyish white, 

 irrorated with fawn-colour : antennae slightly pubescent. Fore wings — two and a half times as 

 long as wide, the costa scarcely arched, with appressed costal fold in the male ; the apical 



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