1881.] NORTH-AMERICAN TINEID.E. 309 



dorsali, dente obliquo ultra medium supra projecto, et margine 

 apicali cum ciliis, dilute croceis : posticis stramineo-albidis. 



Head, palpi, and thorax yellowish white, the sides of the palpi aad 

 the patagia touched with pale reddish brown ; antennae annulated. 



Fore wings pale canary-yellow suffused with bright purplish 

 brown, except at the costal portion of the base and along the dorsal 

 two thirds of the wing ; the apical margin and cilia beneath the falcate 

 apex also maintain the pale ground-colour, and the dark portion of 

 the wing is incised on its lower edge beyond the middle by au oblique 

 tooth-shaped projection from the pale dorsal space. 



Hind wings and cilia straw-white. 



Abdomen and legs whitish grey. 



Expanse 20-22 millim. 



Mount Shasta, Cahfornia, August 1871. 



This and the two following species belong to the group of which 

 C. dentella. Fab. {xylostella, Linn.), No. 1652 of Wocke's Cat., is 

 the type, and are nearly allied to that species. 



Cerostoma canariella, sp. nov. (Plate XXXV. fig. 11.) 



Antennis annidatis ; palpis, cupite, thorace et alls anticis dilute 

 croceis, labe subangulata apud medium et ciliis ad apicem fal- 

 catian subcastaneis ; alis posticis cum ciliis stramineo-albidis. 



Antennae annulated with yellowish white and chestnut-brown. 

 Palpi pale yellowish, slightly tinged with brown at the sides, projecting 

 nearly three times the length of the head beyond it. Head, thorax, 

 and fore wings pale canary-yellow ; the fore wings strongly falcate at 

 the apex, having a subangulate and rather diffused pale chestnut- 

 brown blotch on the cell about the middle, often with a few blackish 

 scales about the angle on the middle of its lower edge ; in good 

 fresh specimens a few single pale chestuut-brown scales are thinly 

 scattered over the surface of the pale ground-colour ; cilia yellow, 

 tinged at the tips with brownish, es{)ecially at the extreme apex. 

 Abdomen, hind wings, aud cilia straw-white. 



Expanse 19-21 millim. 



Scott's Valley, Lake county. May 18, 1871. 



Several specimens flying among Symphoricarpus mollis (Nuttal). 



Cerostoma frustella, sp. nov. (Plate XXXV. fig. 12.) 



Antennis annulatis ; capite stramineo ; palpis externe brunneis, 

 interne albido-stramineis ; alis anticis croceo-Jlavidis, rufo- 

 brunneo svffusis et partim lineatis {excepto margine dorsali 

 dilute croceo^ ; posticis cum ciliis dilutissime griseis. 

 Head yellowish above, paler in front ; palpi yellowish white above 

 and on their inner sides, tinged with brown outwardly ; antennae an- 

 nulated ; the middle of the thorax whitish, the patagia reddish brown. 

 Fore wings pale yellow, suffused and partly streaked with reddish 

 brown, except at the base of the costa and along the dorsal third of 

 the wing, wliich is pale canary-yellow, and is separated from the 

 darker portion of the wing by a whitish streak along the basal half. 

 The brown shading is most conspicuous along the fold, where it ex- 



