AMKiaCAN Li:rnK)l'TERA. 289 



scaled ; fore tibia' unarmed, hind tihire with all spurs. Winj^s very 

 closely short scaled ; tore wings very rounded at apex, 12 veins, two 

 accessory cells, 10 and 11 from cell; hind wings 8 veins, 8 and 4 

 widely separate, 5 nearer 4 than (i, (J and 7 stemmed, 8 with cell to 

 beyond middle. 



The genus is scarcely warranted, as it is not sharply distinct struc- 

 turally from Oeaocalpe, but it has a very different color aspect, has 

 rounded fore wings, and the vestiture of body and wings is very 

 short and close. 



Species. — M. cephixarlam Grt. 



31. cephisarmm Grt. may be Melanchoria iiieondans Hiib. 



36. MAKWOI'TKKYX Patk. 

 Geom. Moths, 2r,i), 1876. 



Type marmorata Pack. 

 Marniaropteryx Gump. Nova Act. Halle, 49, 332, 1887. 

 Palpi short, rather heavy; tongue developed ; clypeus very promi- 

 nent, rounded, swollen, scaled, subcircular; anteijmcof S flattened, 

 the segments even, of 9 filiform ; thorax and abdomen untufted ; 

 fore legs with tibiie spined at end ; hind legs with two pairs of spurs ; 

 fore wings 12 veined, two accessory cells, 10 and 11 from cell, 8 and 

 4 from a point ; liind wings 8 veins, 3 and 4 separate, 6 and 7 short 

 stetnined, 8 anastomosing with cell to beyond niiddle. 



The species of this genus and other species formerly grouped 

 under Marmopteryx beyond question belong to the Hydriomenidai. 

 They have no affinities whatever, so far as I can see, with the P^n- 

 nomidic, or the old subfamily Macariidie, where they were former! v 

 j)laced. 



Species. — M. marmoratd Pack. 



M. odoidata Hulst, n. sp. 



M. wdoiltaia n. sj).— Expands 38 44 mm. Near M. marnionita Pack., of 

 which it may he the Colorado form, though very difJereut in appearance. Palpi 

 reddish ocher: front less reddish, summit of head ocher ; collar and anterior ])art 

 of patajriie reddish ocher. the rest of the tliorax light ocher, as is also the ahdo- 

 men. Wings light ocher. more reddish along costa and on outer field, and de- 

 cidedly .so on either side costally of the outer line. The <'olor of costa hroken 

 hy two squares of lighter color ; outer line distinct towards costa. broad, whitish, 

 rounded at vein ij, fading out towards inner margin ; hind wings evenly colored, 

 the band below faintly showing through ; fringes of fore wings checkered with 

 white, of hind wings uniform white; beneath as above in markings, the outer 

 field lighter, the rest of the wing darker than above: outer fiehl white at apex, 

 smoky posteriorly. I'eddish on botli sides of outer line at costa : liind wings white, 



TRANS. AM. KNT. SOC. XXIII. (37) AUGUST. 1896. 



