NEW GEOMETRID MOTHS— WARREN. 527 



Locality. — 8t. Jean, Maroni River, French Guiana; 1 male, 'Jul}', 

 1904. 



Forewing- with bluntl}^ falcate apex; hind maroin inflected below 

 apex, but not excised; anal angle square; hind wing- with costaand hind 

 margin from apex to tooth perfectl}^ straight, meeting at an obtuse 

 angle; hind margin below tooth crenulate; forewing with large con- 

 torted fovea; antenna? of male pu])escent. 



Type.— Cat. No. 981)1, U.S.N.:\I. 



SEMIOTHISA ATOMARIA, new species. 



F(wev'iv(j. — Dull pale ochreous, densel}' powdered with olive-grav 

 specks and strite; costa yellowish with dark brown dots, lines ver}' pale 

 brown, all marked by a few blackish scales on the veins; first at one- 

 fourth, bent in cell; second oblique just before middle, outer angled 

 on vein 0, then oblique parallel to median; a gray submarginal shade 

 marked only on costa and at anal angle; dark marginal dashes between 

 veins; fringe pale gray with ochreous base; cell spot linear gray. 



llindining. — Paler and less thickly speckled; without tirst line. 



Under side the same, ))ut paler and yellower. 



Head, thorax, and al)domen concolorous. 



Ki'panse of wings. — 28 mm. 



Locality. — Peru; 1 male. 



Antennae with tuberculate fascicles of cilia; forewing not excised, 

 hindwing bluntly angled at middle; no fovea in forewing. 



Very close to S. salnjalida Warren from Paragua}^ 



Type.—Q'At. No. 9392, U.8.N.M. 



SEMIOTHISA DECORATA, new species. 



Loreining. — Brownish ochreous, thickly speckled with fuscous, costal 

 edge yellowish with l)lack dots and streaks; first and second lines ill- 

 defined, formed by black and yellow scales; first close to base starting 

 as a black costal streak and angled in cell; second, median, at two-fifths, 

 vertical and waved, outer line velvety brown-black, strongly toothed 

 outward on veins, vertical at two-thirds, followed closely by a leaden- 

 gra\' band; su]>marginal line pale ochreous, somewhat lustrous, pre- 

 ceded b}" distinct brown shading forming a partial band; a black cres- 

 cent before excision and black lunules below middle; fringe black 

 beyond excision, black mottled with yellow-ochreous and with a yellow 

 basal line below middle. 



TLindvnng. — With antemedian and dentate postmedian line of black 

 and fulvous scales, with a large black cell spot between them; the sub- 

 marginal pale line and brown band preceding it more complete than in 

 forewing; fringe wholly yellow-ochreous, darker beyond veins, and at 

 vein -1 marked with fuscous. 



