374 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxxv. 



inner and subterminal lines in some specimens forms a distinct white 

 fascia, more or less dusted, especially on the veins with brown. There 

 is a variation in the specimens, caused by the intensity of the brown 

 scaling. 



Hind wing whitish cinereous, cilia white, with a fine pale brown 

 line beyond base ; underside the same. Underside of fore wing pale 

 ochreous. 



Six specimens, Baboquivaria Mountains, Pima County, Arizona, 

 July 15-30, O. C. Poling; South Arizona, August 1-15, Poling; 

 Oracle, Arizona, July 12, E. A. Schwartz. 



Cotypes. — Cat. Xo. 119-19, U.S.X.M., and in the Author's collection. 



This species may prove to be a light form of baboquivariella Kear- 

 fott, basing the type of the latter upon the dark form from Huachuca 

 Mountains. From this specimen the description was written. Since 

 then 1 have obtained additional specimens of both sexes, which can 

 undoubtedly be referred to baboquivariella. In these dark forms the 

 white median streak is nearly obsolete, the white subterminal area 

 is not distinctly defined, but the veins are slightly outlined with 

 white. I shall therefore eliminate the four badly rubbed specimens 

 received from Professor Snow, as cotypes of baboquivariella. I hope 

 additional material in perfect condition will prove the correctness 

 of these views. 



MESOLIA BABOQUIVARIELLA (Kearfott). 



Prionapteryx baboquivariella Kkarfott, Can. Ent.. XXXIX, 1907, p. 5. 



Certain structural details omitted in the description should be re- 

 corded. 



Male. — Antenna thickened and flattened ; projection in termen of 

 fore wing acute but hardly hooked. Venation fore wing: 1 absent; 

 6 from very near upper angle of cell; 7, 8, and 9 stalked; 10 and 11 

 from cell, free. Venation hind wing: 3 and 4+5 separate at base; 4 

 and 5 stalked two-thirds; 6 present from upper angle of cell; 7 and 

 8 coincident beyond cell, then separately to margins. 



Female. — Venation same as male; antenna simple. 



The structure places this species in the very closely related genus 

 Mesolia Ragonet, and in section I. between divisions A and B, as de- 

 fined by Hampson." 



MESOLIA HUACHUCAELLA, new species. 



Expanse, male, 15-16 mm; female. 17-20 mm. 



Head grayish brown, white in front; palpi darker than head, 

 ochreous internally: antenna Battened and broadened in male 1 , sim- 

 ple in female, ochreous gray: thorax cream white, more or less 

 shaded with ochreous brown, especially the anterior end; abdomen 



a Proc. Zool. Soc. Loud., 1S95, pp. 962-DG3. 



