551 



Length of body, <$ , 0.60, 9 ; of lore wing, 6 , 0.75, 9, 0.75; expanse 

 of wings, 1.50 inches. 



Colorado (Grote and Sachs). 



This is a well-marked species and need not be confounded with any 

 other. It is not an Eugonia unless the species of Tetrads should all be 

 placed in that genus, as the head and thorax are closely scaled. It may be 

 distinguished from the other species by its pale-yellow hue and the two 

 black conspicuous bands on the fore wings. 



Tetracis paralleliaria Packard. Plate 12, figs. 42, 43. 



Tetrads parallelia Pack., Proc. Bost. Soc. Nat. Hist., xvi, 38, 1874. 



1 'S and 5 9 . — Male antennae with long, slender, those of the female 

 with short, pectinations. Palpi large and long, extending farther beyond the 

 front of the head than in any of the preceding species; fore wings falcate 

 and angulated in both sexes, while the hind wings have a rather small "tail" or 

 angle not less marked in the male than in the female. Fawn-brown; palpi 

 as dark as the fore wings, which are rather darker than the body and hind 

 wings. The fore wings are uniformly fawn-brown, with two nearly parallel 

 brown lines edged with paler scales. The inner line is oblique, bent slightly 

 below the costa, but straight for the remaining distance ; it is situated rather 

 nearer the middle of the wing than usual. Outer line oblicpie, slightly 

 flexuous, curved inward slightly in the middle. Fringe of a little darker hue 

 than the wing. Hind wings paler than the anterior pair, mottled faintly 

 with pale-brown scales; on the under side the spots are more distinct. The 

 discal dots are more distinct beneath than above. On the fore wings the 

 tint is uniform, and the lines are only faintly reproduced. 



Length of body, t, 0.50, 9, 0.60; of fore wing, <?, 0.60, 9, 0.60-0.85; 

 expanse of wings, 1.20-1.60 inches. 



Sierra Nevada, Cal. (Edwards) ; Sanzalito, Gal., April 24, October 8 

 (Behrens). 



In this species, the inner line of the fore wings is straight, neither curved 

 nor flexuous, and the angle in the hind wings is slight compared with that 

 of T. cervinaria, and it is smaller than in T. aurantiacdria, while the female 

 antenna? are pectinated. 



Tetracis aurantiacaria Packard. Plate 12, figs. 44, 45. 



Mctanema aurmitiacaria Pack., Proc. Bost. Soc. Nat. Hist., xvi, 34, 1*14. 



2 d and 5 9. — Body ochreous; wings orange-ochreous, sometimes deep 



