This species is cjisily rccoffiiizcd l)y its wniit ol' any inarkiniis on llic 

 wings, except the two costal dai'k spots, wliicii a.rc usually wanliiiir in most 

 cubincf-spcciiiicns. and l>y the well-marked pectinated anlenn;e. It varies in 

 lint, l)eiiii: IHirc clay-asli, or with an olivivirreenisli liiiue, with sonietiincs lint 

 one, I'ari'Iy two, costal spots, and usually none at all. 



MARMOrTKKYX, gen. vor. Plate 3, fig. 3, ?>a. 



C()Mipar(>(l with ceitain s|iecics oi' ThamnononHi, such as T. nrgil/accuria, 

 which certain species resend)le, it, is liiund to diller in the Hire winifs not l)eing 

 subfiilctitc, the costa Ix-ing straight, the apex well rounded, while the outer 

 edge of the wing is not excavated, heing more or less oblique. The hind 

 wings are rounded, not angulated, and somewhat produced toward the apex. 

 Tlie front of tiie head is full, l>ulging out much more than in Thainnoitnma. 

 The palpi are short, not projecting far beyond the front, wiiile the male aii- 

 tenufB are not pectinated, simply ciliated. \'enalion: two large subcostal 

 cells; costal vein free Ironi the subcostal; the two discal venules transv(!rse; 

 the posterior one bent. 



In coloration, the species are rcmarkalile lor the white spots and liands 

 on the clay-colored groundcolor, whih^ the I'ringe is nsually whitish, conspic- 

 uously checkered with iirown ; and beneath, the wings, especially the hinder 

 pair, are beautifully niarUled with white and brown. 



SijnoiJsis of the. Species. 



For; wiii^js iimcU lomuli'd, inurbled aliovc ,1/. .iliiyiilaria. 



L;ii'j;er tliau tlie otliiT two species; t'oro wing.s iiincli pointed )/. maymintilii. 



Fore wing.s acute ; j;ol(leri-yello\v 1/. UsselUilii. 



M.A.RMOPTERYX STUIGULARIA Packard. Plate f), fig. (15. 



AnixopliTiiJC strifiuluiiu Jliuot ! ! 1, I'loc. Host. Soc. Nat. Hist., xii, 17U, ISli'J. 

 Tcphrina stricjularia Pacli., Proe. Host. Soc. Xat. Hist., xiii, 393, 1S71. 

 Lariiitia cciieiformi.-! Haivey, Hull. IJiilValo Soc. Nat. Sci., pi. 11, Til;. 5, 1S74. 



f) ii and 2 9. — Fore wintrs nuudi rouinb'd at apex; median venules 

 rather short; i'ront of head less full anil protruding than in M. mannnniln 

 frt)in Nevada. JJody and wnngs uiiitiirm sal)le ash-color, mixed with blackish 

 scales on the front of thorax, and on head and palpi. Jfale antenna' aimn- 

 lated above with blackish.. Fore wings with three laroe costal white spots, 

 from the outer of whit h proceeds a curved broad shade, which lades away on 

 the independent venule, but may be tracetl as it curves aroimd nearly to the 



