34 TOETEICIDtE. 



streaked aud dotted witli grcjdsh fuscous ; tlie basal patcli greyisli fuscouSj its outer edge 

 angulatod about the middle aud indented below it ; a greyish-fuscous central fascia widest 

 towards the dorsal maa'giu^ narrower towards the eosta^ containing some tawny scales^ some- 

 times Avliollvj sometimes partially interrupted along the cell ; the apical portion of the wing 

 delicately streaked along the costa with greyish fuscous ; a spot at the apex and an interrupted 

 streak of the same colour extending obliquely upwards from the apical margin above the anal 

 angle, with a slender grejash-fuscous line along the base of the cilia, which are white with a 

 few fuscous spots. Hind wings pale greyish fuscous, 2 ^ . Expanse of wings 16 millims. 

 Southern Oregon, June 2nd, 1872. 



This insect differs from its nearest allies Sericoris bipartitana, Clem. (= similisana, Walk.), 

 and Serico7'is dealbana, Walk., in the white ground-colour of the fore wings being delicately 

 streaked, as well as in the apical half of the costal margin being streaked rather than spotted : 

 moreover it has a generally greyer tinge than those two species, the darker markings of which 

 are blackish. 



Sericoris dealbana. (Plate LXVIII. fig. 3.) 

 Penthina dealbana. Walk. Cat. Lep. Set. xxviii. p. 374. 



Palpi brown, tipped with whitish, with the second joint roughly clothed below ; the apical 

 joint exposed, scarcely projecting beyond the head, which with the antennae is also brown. 

 Fore -wings — with the costa slightly arched; apex rounded; apical margin oblique — white, 

 ■with an outwardly angulated basal patch ; a slightly oblique central fascia indented about the 

 middle of its inner edge and dilated outwardly on the dorsal margin, beyond it three costal 

 spots and one larger apical spot or shade running through the cilia, also an oblique elongated 

 patch from the apical margin above the anal angle to a point below the middle costal spot, 

 all these markings pale olive-brown irrorated with darker brown scales ; some minute ab- 

 breviated brownish streaks between the costal spots and patches, especially towards the apex : 

 the pale ground-colour of the wing is not striated ; and the costal spots are wider and more 

 conspicuous than any to be found in Sericoris dilutifuscana. Hind wings pale cinereous, vpith 

 whitish-grey cilia, slightly shaded round the apex. Type ^ . Expanse of wings 18 millims. 



North America. From Mr. Carter^s collection. 



This species stands in the collection of the Entomological Society of Philadelphia under 

 the MS. name of Antithesia hebascana, Clem. 



Sericoris chalybeana. (Plate LXVIII. fig. 4.) 



Head saffron mixed with fuscous : palpi stout, compressed, projecting scarcely the length 

 of the head beyond it ; the apical joint exposed, whitish grey ; the apex fuscous : antennae 

 fuscous. Fore wings bright saffron (twice as long as wide, the costa regularly arched, apical 

 margin rather straight, not indented) ^ blotched with blackish fuscous, most noticeable in two 



