551 



Lciigtii ol' l)0(ly, <f , O.GO, 9 ; of lure wing, d, 0.75, 9, 0.75; t-xpaiise 

 of wings, 1.50 inches. 



Colorado (Grote ami Sachs). 



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

 other. It Ls not an Eugoiiin unless the species of Tdracis should all Ik; 

 placed in that genus, as the head and tliorax arc closely scaled. It may be 

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

 l)lack conspicuous bands on the fore wing.s. 



Tetracis paealleliaria Packard. Plate \'l. tig.s. 42, 43. 



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



1 !$ and 5 9. — Male antenna' with long, slender, those of the female 

 with short, pectinations. Palpi large and long, extending I'arther beyond the 

 front of the head than in any of the preceding species; fore w-ings 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 tlian the body and hind 

 wings. The fore wings are uniformly tawn-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 oblique, 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, <?, 0.50, 9, 0.60; of fore wing, t?, 0.60, 9, 0.60-0.85; 

 expanse of wings, 1.20-1.60 inches. 



Sierra Nevada, Cal. (Edwards) ; Sanzalito, Cal., A])ril 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 liind wings is slight conq)ared with that 

 of 7\ cervinuria, and it is smaller than in T. (mrimtiaania, while the female 

 antennae are pectinated. 



Tetkacis AURAMTiACARiA Packard. Plate 12, tigs. 44, 45. 



Metanema aurantiacaria Pack., Proc. Bust. Soc. Nat. Hist., xvi, ;!4, 1874. 



2 <i and 5 9. — Body ochreuus ; wings oiaiige-ochreous, .sometime.^ deep 



