10 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxxn. 



out ill the, middle toward apex; another much more undulating- fascia 

 on the middle of the wing- with .similar l>ut exaggerated outline, and 

 a third nearl}- straight fascia at apical third, sending out a zigzag 

 line from its dorsal end into the apical part. No black apical dot. 

 Hind wings whitish gra}". Al)domen light ochreous. Legs silvery 

 with tips of tarsal joints slightly ])lackened. Veins 7 and 8 in fore- 

 wings stalked. 



Alar expanse. — 9 mm. 



Hahitat. — Williams, Arizona [H. S. Barber]. 



T^pe.—Q.'Ai. No. 9945, U.S.N.mI 



Nearest to ^1. cupressella Walsingham, with clear white ground 

 color and with lighter and more well-detined markings, which are 

 nearly perpendicular on the edge, not strongly' ol)li(|ue as in eujyrextielJii. 



ARGYRESTHIA CUPRESSELLA Walsingham. 



I'latt" IV, %. :;. 



Argyresthia cupressella Walsingham, Insect. Life, III, 1890, ]i. IIS — Dyar, Bull. 

 52, U. S. Nat. Mus., 1903, No. 6461. 



Face and labial palpi 3"ellowish white. Head white. Antenna^ 

 annulated with black. Thorax dark golden. Forewings with the 

 white ground color suffused with light golden, and obscured I))' the 

 diffused dark golden markings, which cover the base and the tip of 

 the wing, and consist of an irregular, more or less broken, l)road zig- 

 zag line touching both edges of the wing, and leaving only two or 

 three dorsal and three or four costal spots of the whitish groundcolor 

 exposed, giving the wing a checkered appearance. At the extreme 

 apex is a minute black dot. 



Forewings with only 11 veins — vein 3 absent — and veins 7 and 8 

 stalked. Hindwing with vein -t al)sent. 



Alar expanse. — 8-9 mm. 



Foodplant. — Cupressus. 



//aJ^■^;a^.— California (D. W. Coquillett). 



I have examined the type of this species in Lord Walsingham's col- 

 lection at Merton Hall, England. The series from which the tjqDe 

 was taken was bred bj- Mr. Coquillett at Los Angeles, California, 

 from twigs of several species of Cujjressus. This series is in U. S. 

 National Museum. 



The forewings of this species have only four dorsal veins from the 

 cell below the forked veins 7 and 8 and in the hindwing vein 4 is 

 absent. It would, according to Meyrick's table, fall in the allied 

 genus Cedestis Zeller, but this genus seems to me rather character- 

 ized by the parallel veins 5 and 6 in the hindwings than b}^ the absence 

 of veins in the forewings, and the present species is so closely allied 

 to the nearest following species of Argyresthia^ that 1 include it in this 

 sfenus with its natural allies. 



