64 INSECUTOR INSCITI^ MENSTRUUS 



whitish, median vein dark lined; a faint outer continuous 

 fuscous line. Expanse, 40 mm. 



Type, female, No. 24104, U. S. Nat. Mus. ; Miles City, 

 Montana, July 1, 1890 (C. A. Wiley). 



The single specimen has lost the legs, so the generic refer- 

 ence may possibly be in error. 



Subfamily ACRONYCTINyE 



Xanthothrix stagmatogon, new species. 



Eyes perceptibly narrowed, although not nearly so much as 

 in the type of the genus. Frons with a very large circular 

 process with raised edges and central prominence, the latter in 

 the form of a vertical plate with a little knob at the lower 

 extremity. 



Head, thorax and fore wing above dark orange ; through the 

 cell and following vein 2 above and below, diffused brown- 

 black streaks ; a round white spot beyond the lower extremity 

 of the cell ; a slender blackish subterminal line, bent inward 

 subcostally; a black terminal line, preceded by a series of 

 diffused yellowish spots, the one at tornus the largest; fringe 

 brownish black. Hind wing, abdomen and both wings below 

 black, except the inner area of fore wing, which is pale. Ex- 

 panse, 16 mm. 



Type, female, paratypes male and female. No. 24085, U. S. 

 Nat. Mus.; Guerrero, Mexico, November, 1920 (R. Miiller). 



In the male, the inner area of fore wing up to the white spot 

 is lighter and yellowish, the veins retaining the dark orange 

 ground. 



Chlorothrix, new genus. 



Fore wing with an areole ; fore tibiae and tarsi without spines 

 or claws ; frons with a shovel-shaped process at the middle, 

 the plate below short, smooth, narrowly emarginate in front 

 and angled at the sides ; vestiture of thorax, hairs, with a few 

 scales intermixed. 



Chlorothrix zothecaea, new species. 



Fore wing pale clay-color, thickly irrorate with olive green ; 



