188 ARGYRESTHID ©, 
costa rather before the middle, the other reaching the costa a little be- 
fore the apex, and between them are generally a few golden spots on 
the costa) ; beyond is another golden fascia, which indeed occupies the 
whole of the apex of the wing, except a small white spot on cach mar- 
gin; cilia pale greyish-brown. Posterior wings grey, with paler cilia. 
(The anterior wings are sometimes so much suffused with pale golden 
that the markings are almost obliterated.) 
Common among birches in June and July. The larva feeds 
under the bark and in the young shoots of the birch, in March 
and April. 
19. literella, Haw. L. B. 570 (1829); Step.; Sta. Alis anticis 
albidis, fascia ante medium, fascia media fureata, fascia postica in apicem 
desinente aureis, costam non attingentibus; capillis albidis. Exp. al. 54 lin. 
Head whitish. Face and palpi white. Antenne white, annulated 
with fusecous. Anterior wings whitish, with a slender golden fascia 
from the inner margin, not far from the base, sloping inwards, a furcate 
fascia from the middle of the inner margin, neither reaching to the costa, 
and a third golden fascia from the anal angle, which, after reaching 
half across the wing, is deflected, and terminates in the apex of the wing ; 
cilia pale ochreous. Posterior wings purplish-grey, with paler cilia. 
Very rare; has been taken in Darenth Wood, in June. In the 
collection of the British Museum, and in that of Mr. B. Standish. 
20. Brockeella, Hiib. Tin. 362 (1816); Treit.; Step.; Dup.; 
Zell. ; Sta.—L. W-ella, Waw.—Rajella, Lin. —vav. aurivittella, Maw. ; 
Step. Alis anticis aureo-brunneis, macula basali dorsi, fascia ad cos- 
tam attenuata, ante medium, macula majore ad angulum analem, macu- 
lisque tribus coste niveis; capillis xiveis. Var. alis anticis dorso toto 
niveo, fascia ac prima macula costali confluentibus. xp. al. 54 lin. 
Head, face, and palpi white. Antenne white, annulated with pale 
fuscous. Anterior wings shining golden-brown, with a spot at the 
base on the inner margin, a fascia before the middle attenuated on the 
costa, a large spot at the anal angle, and three spots on the costa (the 
last of which is small and lies immediately before the apex) shining 
snowy-white ; cilia greyish-brown. Posterior wings grey, with paler 
cilia. In the variety awrivitéel/a, the inner margin of the anterior wings 
is entirely white, and the fascia and first costal spot are frequently con- 
fluent ; intermediate specimens also occur. 
Common among birches in June and July. The larva feeds in 
the young shoots in March and April. 
21. arceuthina, Zell. Isis, 1839. p. 205; Sta. Alis anticis »- 
tidis viridi-eneis ; capillis (ac thorace) niveis. Exp. al. 44 lin. 
Head white. Face greenish-bronze. Palpi whitish. Antenne white, 
annulated with fuscous. Anterior wings unicolorous shining bronzy- 
green, with paler cilia. Posterior wings pale grey, with paler cilia. 
Not scarce among junipers, in May. 
