PROC. ENT. SOC. WASH., VOL. 24, NO. 9, DEC., 1922 211 



terminally from inner margin to vein 5; a subterminal black shade from costa to 

 vein 6; a thick terminal black line interrupted at veins; cilia silvery gray with 

 darker shading and a buff line at base. Hind wings thinly scaled, whitish 

 suffused with fuscous, the veins dark. The fringe of large scales on costa below 

 iridescent from light to dark steel gray. 

 Expanse, 17 mm. 



Habitat. Cayuga, Guatemala. 



Type Cat. No. 25652, U. S. N. M. 



This species has no process from base of antennae. 



Tetralopha aelredella, new species. 



Male. Palpi fuscous thinly irrorated with white; a fine white circle around 

 eyes. Collar white overlaid with pinkish cinnamon. Thorax mottled brown 

 and pinkish cinnamon. Abdomen banded with black and cinnamon buff. 

 Fore wings: base whitish with dark irrorations; a black basal spot on costa and 

 subbasal streak in cell; antemedial line excurved on costa, outangled on median, 

 inangled below cell, not reaching inner margin; medial space from cell to inner 

 margin clay color; a black line from costa medially, outbent and angled at end of 

 cell, then downbent and not reaching submedian; terminal half whitish irrorated 

 with fuscous and clay color; post-medial line black, vertical on costa, outcurved 

 and lunular dentate beyond cell, slightly incurved between veins 2 and 1; a 

 subterminal dark shade almost parallel with postmedial, more heavily marked 

 and black from costa to vein 6; a terminal black line interrupted at veins; 

 cilia finely buff at base followed by a dark line and tipped with white. Hind 

 wings thinly scaled, whitish at base, then suffuesd with fuscous, the veins dark; 

 cilia as on forewing. Fore wings below fuscous, the inner margin whitish; the 

 large scales on costa iridescent gold and pale green. 



Expanse, 19 mm. 



Habitat. St. Jean, French Guiana. 



Type. Cat. No. 25653, U. S. N. M. 



This species has no process from base of antennae. 



Tetralopha sabbasa, new species. 



Male. Antennae with well developed process. Palpi mottled white and 

 fuscous; vertex with cinnamon scaling. Collar white with cinnamon and fus- 

 cous scaling laterally. Thorax mottled brown and dark gray, the patagia tipped 

 with broad iridescent pale purplish gray scales. Abdomen buff thickly irrorated 

 with fuscous gray above, leaving whitish segmental lines. Fore wings: basal 

 half blackish slate irrorated with white, the outer half grayish suffused with 

 brown; a faint whitish streak below cell at base; an antemedial outcurved black 

 line across cell to submedian, followed by an outbent whitish line from cell to 

 inner margin, twice outcurved; a small cinnamon spot below vein 2; veins from 

 cell to beyond postmedial fuscous; an indistinct postmedial fuscous shade slightly 

 outcurved and outbent below vein 2; terminal area irrorated with white on inter- 

 spaces; cilia dark gray partly tipped with white and with a fine buff line at base. 

 Hind wings whitish faintly suffused with brown, the veins and termen narrowly 

 darker; cilia brownish tipped with white. Fore wings below with costal scales 



