NE W GEOMETRID MO TILS— WA RREN. 553 



margin; the outer line from costa at quite three-fourths runs obliquely 

 inward to vein 7 forming an indentation inward on veins 6 and 1, and 

 a shallow sinus from upper to lower fold preceded throughout by 

 a deeper brown shade; a diUuse brown patch at apex and gray clouds 

 above anal angle; a small black white- tipped dot before margin above 

 and below vein 6, and another below vein 3; cell spot formed of two 

 small white spots, the upper one oblique, the lower minute. 



Hindwing.—Dsirk fuscous, with a dark slightly crinkled line at two- 

 thirds; marginal space below middle pale ochreous tinted and striated 

 with brown and black; fringe ])rown. 



Female browner, with much fewer striations; the outer line more 

 irregular, being slightly indented at each vein, the chestnut shade 

 before it more delined; in the marginal area it is followed from vein 

 6 to the lower fold by a connected series of blackish teeth on the 

 veins; the apical brown shade is better delined and reaches vein 3; 

 and the submarginal spots are larger. 



Under side of both sexes gray-brown, mottled with fuscous and 

 pale; outer line ochreous with dark inner edge, nearly straight in 

 forewing, irregularly waved in hindwing and swelling out into a large 

 pale patch in lower half, followed by a bright brown cloud at anal 

 angle; marginal area of forewing darker brown with a pale patch on 

 margin above anal angle preceded b}^ some blackish sufi'usion; cell 

 spots of both wings ochreous. 



Head, thorax, and abdomen brown, the last pale brown, with a 

 blackish dorsal mark on segment 5 in the female; the anal segment in 

 the male whitish ochreous. 



Expanse of wings. — Male, 36 mm.; female, 39 mm. 



Localities. — Rockstone, Essequibo, British Guiana; 1 male, Septem- 

 ber, 1904: St, Jean, Maroni Kiver, French Guiana; 1 female, October, 

 1904. 



The dentations in the female are usualh' much more prominent than 

 in the male; the hindwings in both sexes are regularly crenulate and 

 denticulate. 



The antennas of the male are shortly pubescent. 



Type.—Q^t. No. 9441, U.S.N.M. 



PERO FCEDA, new species. 



- Forewing. — Dull olive-ochreous, black speckled; the basal area filled 

 with gray-brown; the central with olive-brown below the middle and 

 before outer line; first line at one-third, curved above and below 

 median vein; the curve above it filled up with blackish forming a small 

 blotch; cell spot gra}' with a brown ring; preceded by an unspeckled 

 patch of ochreous extending to costa, which is striated with brown; 

 outer line from two*-thirds of costa to three-fifths of imier margin, 

 lunulate between veins, and with a sinus from fold to fold, followed 

 on costa by a pale spot; marginal area with coarse black speckles, and 



