June, 1910.] Smith : New NocTuiDiE. 87 



Rhizagrotis actona, new species. 



Whitish, more or less powdered with black, so as to give a very light 

 ash gray tint. In the male there is a slight admixture of luteous and the 

 powdering is less dense. Head and thorax concolorous. Primaries with 

 basal and t. a. lines marked on costa only. T. p. line strongly outcurved over 

 cell, then very even, almost parallel with outer margin. It is single, not 

 well defined, best marked on the veins, sometimes tending to punctiform. 

 S. t. line marked by an outward dusky shading, with strong outward dents 

 reaching the margin on veins 3 and 4, and an almost equally strong outward 

 angle touching margin just below apex. Fringes whitish, cut with black 

 opposite the interspaces. Veins narrowly black marked. Claviform a narrow 

 loop extending from base to middle of wing, more or less well defined by 

 black edging, which sometimes appears as a solid line toward base and tends 

 to become lost outwardly. Ordinary spots small, whitish or with a trace of 

 luteous, more or less defined and shaded by black scales. Orbicular narrow, 

 oblique, tending to extend toward and even unite with the small, narrow, 

 somewhat crescent-shaped reniform. Secondaries white, veins outwardly 

 dusky, a venular punctiform extramedian line. Beneath, white in the male; 

 in the female the primaries smoky, both wings with a punctiform outer line. 



Expands, i. 30-1. 50 inches ::= 33-37 mm. 



//fl&iVa/.— Stockton, Utah, IV, VI, VII, IX, Mr. Spalding. 



Two males and seven females in good or fair condition. The 

 insect is alHed to albalis but is less even in color, seems narrower 

 winged, the females are decidedly smaller and darker and the t. p. 

 line is much better defined than in any albalis that I have seen. The 

 species are close allies, but look obviously distinct when equal series 

 are associated in the collection. 



Peridroma serano, new species. 



Head deep smoky brown, palpi black at sides. Collar gray, mottled with 

 brown, with a narrow brown line crossing middle. Thoracic crests marked 

 with gray, else reddish brown. Primaries brown : basal area to t. a. line except 

 within basal line washed with gray ; median area a richer, more purplish 

 brown ; terminal space darker, smoky brown. Basal line geminate, distinct, 

 brown. T. a. line geminate, brown, very evenly oblique. T. p. line not dis- 

 tinct, defined rather by the contrasts between median and s. t. spaces, evenly 

 sinuate. S. t. line also defined by the darker contrasting terminal area, and 

 a little irregular in course. A series of small black terminal lunules and a 

 narrow pale line at base of fringes. Claviform small, pointed, black. Orbic- 

 ular large, open to the costa, somewhat V-shaped. Space between it and 

 reniform deep black. Reniform large, open, not defined except by the pre- 

 ceding black spot. Secondaries pale smoky. Beneath, primaries dull smoky 

 brown ; secondaries whitish, powdery along the costal area, with a partial 

 extra-median line and a small discal spot. 



Expands, 1.60 inches ^ 40 mm. 



