60 INSECUTOR INSCITI^ MENSTRUUS 



Family NOCTUID^ 

 Subfamily AGROTIN^ 



Heliolonche dysseteta, new species. 



Fore wing dark brown, irrorate with tawny scales ; median 

 area lighter, relieving a rounded obscure reniform, with lighter 

 center, and a narrow dark outer line, slightly excurved above. 

 Hind wing black, with a short yellow band in the disk, cut off 

 at both ends ; fringe pale yellowish. Expanse, 19 mm. 



Type, female. No. 34087, U. S. Nat. Mus. ; Guerrero, 

 Mexico, November, 1920 (R. Miiller). Paratypes, male and 

 female, with the same data. 



Thyreion gelotopoeon, new species. 



Fore wing dark brown, the subterminal space darker and 

 smooth ; lines slender, brown, wavy, the inner of three arcs, 

 produced below vein 1, the outer denticulate on the veins, and 

 followed by minute white points in the brown shade ; orbicular 

 round, with central dot ; reniform slenderly outlined, full, in- 

 dented and dark-filled ; median shade curved from reniform 

 to inner margin ; terminal space evenly brown ; fringe darker. 

 Hind wing sordid whitish, with a shaded discal mark ; a broad 

 blackish outer border, containing a spot of the ground color ; 

 fringe pale. Expanse, 33 mm. 



Type, female. No. 34088, U. S. Nat. Mus.; Tucuman, Ar- 

 gentina, March 36, 1917 (E. W. Rust) ; paratypes, four fe- 

 males, two with the same data; Tucuman, Argentina. Decem- 

 ber, 1905 (E. Dinelli) ; La Rioja, Argentina (E. Giacomelli). 



Commonly determined, both locally and at the U. S. National 

 Museum, as Chloridea ohsoleta Fabr. ; but the spinulation of 

 the fore tibiae is different, although the frontal plate above 

 the tongue is very weak, and not strong, as in typical Thyreion. 



Mesembreuxoa exsiccata, new species. 



Fore wing dark gray, smooth and uniform ; inner line black- 

 ish, double, faint ; claviform a trace ; reniform large, full, 

 solidly blackish filled ; outer line a row of points, black within, 

 white without : black terminal dots between the veins. Hind 



