34 insecutor insciti.ii menstruus 



Larentiin^ 

 Tephroclystia endotherma, new species. 



Fore wing dark gray, a warm brown shade occupying the 

 median area below cell. Discal dot black, narrow. Lines 

 faint, pale, not waved. Traces of blackish subterminal line on 

 lower half of wing. Hind wing sordid whitish, narrowly gray 

 on the inner area ; discal dot and terminal line black, the latter 

 broken on the veins. Expanse, 19 mm. 



Type, female, No. 33759, U. S. Nat. Mus. ; Mexico City, 

 Mexico, June, 1919 (R. Miiller). 



Tephroclystia exophychra, new species. 



Fore wing dark gray, the terminal area shaded with pale 

 yellowish, forming an oblique shade from apex and a broad 

 blotch in the middle, the two connected inwardly ; discal dot 

 black ; outer line showing black streaks centrally ; no other 

 distinct lines. Hind wing pale sordid, gray along the inner 

 margin, the gray running half way across the wing in half a 

 dozen wavy lines. A terminal black line on both wings, cut 

 by the veins. Expanse, 30 mm. 



Type, female, No. 33760, U. S. Nat. Mus.; Mexico City, 

 Mexico, June, 1919 (R. Miiller). 



THYRIDID^ 

 Thyridopyralis illustrata, new species. 



As in T. randialis Dyar, but differing in detail : The median 

 area of the wing is nearly wholly gray, showing only a little 

 white around the discal mark ; terminal space also gray, except 

 for a small light spot below the middle. The species seems 

 larger than randialis. Expanse, 33 mm. 



Type, male, No. 33761, U. S. Nat. Mus. ; Zacualpan, Mexico, 

 June, 1919 (R. Miiller). 



PYRALID.^ 



Pyraustin^ 



Pachyzancla intinptalis, new species. 



Pale straw-yellow, lines dark brown ; inner line arcuate, 

 even ; orbicular a dot, renif orm an arc ; outer line slightly ex- 



