327 



Hi)id icings, dark gray ; cilia gray. 



Abdomen, gray tinged with saflfron posteriorly. 



Hind legs, whitish, with a very faint indication of darker scaling on the penultimate 



tarsal joint. 

 Exp. : ah : — 7 millimetres. 

 //(j&.— United States. 

 Type $ Mu8. Wlsm. ^ 



Received from Dr. Riley, bred from birch, 1SS4. This species can not be confounded 

 with any of the birch-feeding species of Europe, among which cavella Z. approaches 

 it more nearly than others. 



Lithocolletis grindeliella, sp. n. 



Jntenncp, dull gray, with slightly paler annulations. 



Palpi, grayish. 



Head, crown tufted with mixed iron gray and reddish brown scales : face grayish. 



Thorax, ferruginous. 



Fore icings, pale ferruginous, dusted with iron gray and clouded with blackish scales 

 beyond the middle of the wmg to the apex ; three whitish costal streaks, very 

 indistinct, at about equal distances apart, the first and second of which are out- 

 wardly oblique and are met at a somewhat acute angle on the middle of the 

 wing by two even less distinct dorsal streaks, faintly dark margined externally : 

 the third is a mere spot, opposite which is a small spot at the base of the cilia at 

 the anal angle: immediately preceding the apex is a conspicuous curved white 

 costal spot divided from a smaller and less conspicuous one below it by the 

 cloudy streak of black scales which runs to the apex : cilia with a ferruginous 

 tinge, becoming gray at and within the anal angle, and having a few black 

 scales below the apex. 



Hind icings and cilia, grey. 



Abdomen, dull grey ; anal tuft pale. 



Legs, whitish, tarsal joints unspotted, tibiae barred with gray externally. 



Exp. : al. : 8 millimetres. 



Hah., Alameda County, California. 



Type i Mus. Wlsm. 

 This description taken from a specimen given me by Dr. Riley was bred from Grin- 



delia robusta in October. It is nearly allied to solidaginis F. & B. but is somewhat 



more suffused with dark scales along the costal portion of the wing. 



Lithocolletis faginella Z. 



In my previous paper, while I mentioned this species in the list of larvie and their 

 food plants [Ins. Life ii. p. 120 (1889)] I forgot to record its occurrence in Americaon 

 the evidence of a specimen in Dr. Riley's collection which can not be separated from 

 the European forms of this species. I have no information as to the exact locality 



whence it was obtained. 



