260 



inner edge. The two inner costal spots are within the basal halt' of the COSta. 

 Costa darker than rest of wing, with pale strigse. Outer margin of wing 

 beyond the outer whitish shade dusky. Fringe checkered conspicuously with 

 dark, with two narrow costal white checks just before the apex. Hind wings 

 uniform sable-ash, with no markings; fringe checkered. Beneath, marbled 

 and mottled with white and black, reminding us of the peculiar markings 

 of Chhowobus. Fore wings with costal and outer margin marbled, inner por- 

 tion of wing uniformly sable. The three costal spots distinct as above, the 

 outer band disappearing entirely on the independent venule. An apical 

 whitish region. Fringe on both wing; dark, checkered with black, and with 

 a slender line near the base. Hind wings uniformly marbled over whole 

 surface. Within the middle of the wing, a white, linear, transverse spot 

 connecting the discal fold with the subcostal vein. Beyond the middle 

 of the wing, a white hand, distinct on the costal and inner edge, but fading 

 out in the middle of the wing; each end of the hand with a broad blackish 

 patch outside; inner margin of wing blackish. Legs blackish, spotted with 

 white. Abdomen with a row of black dots on each side. 



Length of body, c?, 43, 9,0.45; of fore wing, cf, 0.67, 9, 0.70; ex- 

 panse of wings, 1.40 inches. 



".Montreal, Canada'' (Harvey); Montpelier, Vt., August (Sanborn, Bost. 

 Soc. Nat, Hist.); West Virginia, April (Mead). 



The three costal spots vary in either being at equal distances apart, 

 though more usually the two inner spots are nearer together than the middle 

 and outer ones ; otherwise it does not vary much. 



This beautiful species may at once be known by the three conspicuous 

 costal white spots, the outer terminating in a faint shade, and by the mesial 

 white hand of secondaries being obsolete in its middle third. The beautifully- 

 marbled under surtace will at once distinguish it from any of our other moths 

 of this family. The Cahfornian M. marmorata approaches Selidosema in the 

 acute primaries, and wants the two basal spots on the costa. 



Marmopteryx marmorata Packard. Plate 9, fig. 66. 



Tephrina marmorata Pack., Proc. Bost. Soc. Nat. Hist., xiii, 393, 1871. 



2 9. — Closely allied in form and markings to M. strigularia, wrongly 

 referred by Mr. C. S. Minot (Proc. Post. Soc. Nat. Hist., vol. xii) to 

 Anisopteryx. These two species belong to a distinct section of the genus. 



