68 ENTOMOLOGICAL SOCIETY 



Outer line obsolete, represented by a triangular costal patch. 



Fore wing white; hind wing white pcrnuda Druce. 



Fore wing olive-gray, basal space white ; hind wing brown. 



varona Schaus. 

 Ground suffused with dark over the median space, the terminal space 

 discolorous, white. 



A white patch on middle of inner margin lauta Schaus. 



No such white patch argcntata Druce." 



Psilacron Felder. 



Psilacron Felder, Reise Novara, pi. 97, fig. 22, 1874. 

 Hardingia Schaus, Trans. Ent. Soc. Lond., 1901, p. 293. 



There is an error in Mr. Schaus's characterization of Psila- 

 cron ; it is stated that vein 7 arises from the areole, whereas it 

 is really shortly stalked, in one of the specimens before me ; 

 in the other it arises from the base of the stalk. This is the 

 only difference between Psilacron and Hardingia, and, as it 

 is inconstant, I unite the genera. 



Psilacron plagimargo, n. sp. 



Antennae simple; head and thorax olive-brown, intermixed with white 

 hairs; abdomen olive-brown, shading to gray posteriorly. Fore wing 

 olive-brown, shaded with purplish over inner margin and subterminal 

 area, the veins outwardly lined in black; ordinary lines obsolete, except 

 the median line, which is distinct, black, and bent at right angles on 

 vein 4 ; a heavy black bar on submedian fold from base nearly to middle, 

 edging the purple shade on inner margin; a rounded black mark on 

 vein 2, touching the margin on the vein, followed by a white patch; 

 another white patch above vein 4 on the margin; fringe spotted with 

 blackish at the ends of the veins. Hind wing pale purplish, a faint 

 whitish mesial shade ; fringe spotted with blackish at the ends of the 

 veins. Expanse 48 mm. 



One female, Orizaba, Mexico (R. Miiller, No. 970). 

 Type. — No. 11 371, U. S. National Museum. 



Psilacron agcistrum, n. sp. 



Head and thorax olive-green, intermixed with purplish brown. Fore 

 wing light purplish, the basal space darker; three small patches of 

 olive green near the middle of the wing, one above vein i, one at the 

 origin of veins 3-4, and one below the costa at the outer third; inner 

 line geminate, crenulate, purplish brown; discal mark faint, linear, 

 lunate, dark; outer line crenulate, geminate, broken between veins 2-3 

 and 4-5. filled with white, the upper segment forming a hook; median 



* This is described as a male, but the character of the markings 

 causes me to suspect that an error may possibly have been made. 



