326 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.50. 



Mastixis apsintJies (Neoherminia) Druce, Biol. Centr.-Amer., Het., 

 vol. 1, 1891, p. 473, pi. 39, fig. 9. 



Mastixis angitia {Neoherminia f) Druce, Biol. Centr.-Amer., Het., 

 vol. 1, 1891, p. 473, pi. 39, fig. 11. 



? Masiixis tessellata (Poena) Druce, Biol. Centr.-Amer., Het., vol. 1, 

 1891, p. 484, pi. 40, fig. 15. 



Mastixis lineata ( Mastigophorus) Schaus, Proc.U. S. Nat.Mus., vol. 

 30, 1906, p. 129. 



? Mastixis iurrialbensis , Schaus, Ann. Mag. Nat. Hist., ser. 8, vol. 

 11, 1913, p. 9. 



Mastixis liyades Dognin, Het. Amer. Sud, fasc. 8, 1914, p. 50. 



Mastixis alhilimhata Dognin, Het. Amer. Sud, fasc. 8, 1914, p. 50. 



Mastixis languida Dognin, Het. Amer. Sud, fasc. 8, 1914, p. 51, 



Mastixis infuscata Dognin, Het. Amer. Sud, fasc. 8, 1914, p. 51. 



? Mastixis plumalis {Tly.pena) Felder and Rogenliofcr, Reise Novara, 

 1873, pi. 120, fig. 36. 



? Mastixis gdlealis (Rejectana) Felder and Rogenliofer, Reise 

 Novara, 1873, pi. 120, fig. 21. 



The last two species are unknown to me. 



MASTIXIS DUKINFIELDI, new species. 



Male. — Palpi lilacine gray, fringed below with dark brown. Head, 

 collar, thorax, and fore wings dull lilacine gray. Abdomen light 

 brown. Fore wings: Antemedial line black brown, deeply outcurved, 

 lunular; orbicular and reniform yellow brown edged with fuscous, 

 the orbicular small, round, the reniform slightly incurved; postme- 

 dial fuie, black, wavily dentate, parallel with termen; sub terminal 

 straight, yellow brown edged with fuscous, its outer edge slightly 

 sinuous; an apical dark streak; an interrupted terminal black line. 

 Hind wings light brown, the costa whitish; a fine dark postmedial 

 line; a pale sub terminal line, inwardly edged with fuscous, not 

 reaching costal half of wing; terminal line as on fore wing. 



Expanse. — 26 nun. 



Habitat. — Sao Paulo, southeast Brazil. 



Type.—Cfii. No. 19766, U.S.N.M. 



Allied to M. lysaniax Druce. 



MASTESIS mPPOCOON, new species. 



Male. — Head, collar, and thorax light brown; abdomen similar at 

 base shading to dark grayish brown. Fore wings: Basal two-thirds 

 light browTi, tinged with lilacine, terminal third fuscous slato color, 

 the postmedial and subterminal lines preceded by fuscous brown 

 shades, the former buff on costa, then slate color, straight, almost 

 vertical, the latter buff gray, wavy, outbent to vein 6, sliortly in- 

 turned and vertical to tornus; the termen tinged with gray; a terminal 



