June, 1917] Wright: Geometrid^. 125 



Male. — Front creamy white, the scales between the antennae projecting and 

 slightly overhanging. Collar, thorax and patagias yellow tinged with brown. 

 Abdomen slightly darker dorsally at the base, fading to cream white on the 

 sides and tip. 



Primaries : Basal third yellow washed with brown. A narrow irregular 

 brown line beginning at the inner third on costa courses sharply outward to 

 middle of cell, thence inward to basal fourth of inner margin. An oufer 

 brown line begins on costa before the apex and courses very irregularly 

 across the wing to outer third of inner margin. This line is scalloped inwardly 

 with the points on the veins. A large blunt tooth points outward on vein 

 four; just beyond is a bright yellow shade, rather sharply defined and narrow; 

 the space beyond shade is wood-brown with a faint lilac-tinted patch near 

 anal angle. The broad mesial band is covered with brownish-lilac scales, 

 almost obliterating the yellow ground color except a wide brownish-yellow 

 streak on the costa and a rather large brownish-yellow discal spot in ihe outer 

 end of the cell, which is circled by a fine dark brown line. 



Secondaries : Pale pellow, darkening somewhat outwardly. An indefinite 

 brownish spot at outer third of inner margin indicates a cross line which 

 appears very faintly on the veins in the middle area. 



Beneath pale yellow, the outer line on the primaries being slightly indi- 

 cated near the apex. 



Female. — Same as male except that the discal spot is obsolete or but faintly 

 indicated by a few brown scales. The outer fourth of secondaries considerably 

 darkened with fuscous and the cross line much stronger than in the male, 

 being easily traced as far as the middle of the wing. 



Holotype male, Berkeley, Cal., jNIarch i, 191 5. Larva on White 

 Pine (VanDuzee.) In attthor's collection. 



Allotype female, Berkeley, Cal., April 9, 1915 (Graves). In 

 Denton mount. In Univ. Cal. collection. 



Paratype. one male in Strecker collection, Field Museum, Chi- 

 cago, III. 



This species is much smaller than cdwardsata, and while it seems 

 to be only a form of that species it may prove to be a valid species 

 instead of a subspecies as here designated. It is apparently confined 

 to the west coast as the types are from Berkeley, near San Francisco, 

 and the paratype is from Washington (Territory). 



I am indebted to Mr. Frank E. Watson, of the Am. Mus. Nat. 

 Hist., New York, and to Mr. Louis Swett, of Boston, for assistance 

 and advice in the preparation of this paper. 



