372 I'ROCEEDIXOX OF THE X ATIOXAE MUSEUM. vol.38. 



PERO MODESTUS, new species. 

 Plate 13, fig. 13; Plate 16, fig. 6. 



Expanse, 30 to 38 mm.; average expanse, about 34 mm. Head 

 and body light to dark gray with a yellowish tint, and sometimes 

 more or less heavily shaded with umber brown. The brown, where 

 it occurs on the thorax, is usually smoothly applied, but on the abdo- 

 men it is distributed in minute speckles. Antenna? light grayish- 

 yellow, usually with a white spot at the base of each, which rarely 

 are connected by a concolorous line across the front. Ground color 

 of wings light gray with decidedly yellow or very pale brownish cast. 

 Usually, though not always, then 1 is a sparse scattering of brown 

 atoms over the surface; rarely these are profuse and then cluster 

 together in transverse shapes and give to the wings a markedly 

 strigate appearance. Inner line of primaries dark brown or blackish, 

 always conspicuous, narrow, and never diffuse; the scallops are usually 

 pronounced, particularly the one between veins radius and cubitus, 

 which extends far into the cell. Outer line concolorous with inner 

 line, strongly sinuate, sharply defined throughout, and shaded inter- 

 nally with lighter brown. Inner area composed of the ground color 

 without modification except for the atoms occasionally clustering and 

 assuming transverse 1 positions. Median area usually composed of 

 the ground color, though rarely the entire held is decidedly reddish- 

 ocherous, contrasting strongly with the remainder of the wing. There 

 is no shading along the inner line, and that along the cost a and outer 

 line rarely reaches to the center of the Held and nearly always not 

 more than half so far. Outer area frequently with a faint diffuse 

 cloud of light brown following the outer line but separated from it by 

 a narrow band of ground color. Other diffuse clouds are sometimes 

 present at the outer margin between R 8 and M 8 or near the anal angle. 

 A narrow terminal line is present in all well preserved specimens and 

 one to six small white intervenular dots are between veins R 4 to Cu 2 . 

 Discal -pot small, white, rounded to linear angular, and sometimes 

 bordered with a narrow brown ring: rarely it is absent. Fringe 

 slightly darker than ground color. Transverse line of secondaries 

 brown, bordered externally with whitish and irregularly dentate in 

 its course, or simply waved; it terminates on the inner margin wit bin 

 a rather short distance from the anal angle. Terminal line and fringe 

 as in primaries, the former broadened and heightened in color near 

 the anal angle and sending three or four triangular-shaped marks into 

 the wing between M, to tin 1 anal vein. The outer area, especially 

 tow aid and at the anal angle, is sometimes darker than the rest of the 

 wing. Discal spot absent or indistinctly showing as a dusky spot. 

 Beneath, paler than above and sparsely dusted with brown atoms. 

 Tlie extradiscal line- are usually very conspicuous, on the secondaries 



