314 Mr. A. G. Butler on some 
3 ¢, Rouge River; ¢ between John Day’s River and 
Fort the Dalles. 
This form is represented by Stretch, pl. v. figs. 11 and 16, 
as L. lena; but the black band on disk of secondaries (barely 
shown on the secondaries of his female) is often broad and 
well marked in both sexes. 
Var. 7. Leptarctia decia. 
Lithosia decia, Boisduval, Ann. Soc. Ent. Belg. xii. p. 72. n. 85 (1868). 
2. Rouge River, Oregon and Mendocino County, Cali- 
fornia. 
This form chiefly differs from Stretch’s fig. 11 in the 
reddish-orange colour of the secondaries and the less promi- 
nent white spots on the primaries. 
Var. 8. Leptarctia lena. 
Lithosia lena, Boisduval, Ann. Soc. Ent. Belg. xii. p. 73. n. 85. 
& 2. Between John Day’s River and Fort the Dalles 
(five examples). 
No examples of this variety (Stretch, Zyg. & Bomb. 
pl. v. figs. 3 and 5) were obtained at Rouge River; but 
L. fulvofasciata, regarded by Stretch as a variety of the same 
species, though distinct from L. dimidiata and L. decia, 
occurs there with them. 
Lithosiide. 
+ 
HYALOSCOTES, gen. nov. 
Aspect of Psyche and Comacla; venation of Byssophaga, 
Behr. (= Trichromia, Hiibn.)*, but the primaries with longer 
costal margin, more arched towards apex; wings semitrans- 
parent, opalescent ; the head and body very hairy, particularly 
the sides of the abdomen; genitalia prominent; antenne 
setose, hairy at the base; legs long and rather slender; palpi 
very small. Type H. fumosa. 
22. Hyaloscotes fumosa, sp. 0. 
Wings semitransparent, smoky grey, with darker marginal 
line, veins, and fringes: primaries slightly darker than 
secondaries: antennes brown; body blackish, clothed with 
long whitish hair; genitalia mahogany-brown; legs pale 
greyish brown. Expanse of wings 27 to 31 millim. 
* See Stretch in Zyg. & Bomb. p. 48, as “Custhene,” 
