340 PROCEEDINGS OF THE NATIONAL MUSEUM vol.86 



area beyond subterminal line ; a few black scales scattered over entire 

 wing; antemedial line narrow, black, outwardly angled from basal 

 fourth of costal margin, the apex of angle at vein lb, strongly 

 marked from costal margin to lb, less sharply defined from there to 

 inner margin; subterminal line narrow, black, outwardly margined 

 by a narrow border of white, beyond which is a faintly dark shading 

 which forms an obscure line paralleling the subterminal line, the 

 parallel black lines most pronounced from costal margin near apex 

 to vein 6 ; subterminal line irregularly dentate and sinuate, the angu- 

 lations rather shallow; discal dots fused, forming a black line or 

 smudge along discocellular vein; a row of black dots along termen 

 at the vein ends; cilia grayish fuscous; underside of wing grayish 

 fuscous, in some specimens with a more ocherous tint. Hind wing 

 white, semihyaline with more or less fuscous suffusion at apex and 

 along costal and terminal margins ; cilia white with a narrow, dark, 

 subbasal line. 



Alar expanse, 31-38 mm. 



Genitalia (figs. 1-lf) with outer margins of vinculum evenly 

 curved ; elements of transtilla rather broad. 



Female. — Similar to the male except that pectinations of antenna 

 are much shorter (fig. 84), and fuscous shadings on hind wings are 

 more extended. 



Alar expanse, 35^5 mm. 



Genitalia (figs. 41-41a) with ductus bursae rather slender for most 

 of its length. 



Types. — ^In British Museum {prodenialis) ; in Cambridge Museum 

 of Natural History (hoUii). 



Type localities. — "United States" (prodenialis)', Texas {hollii). 



Food plants. — Opuntia {Platypuntia) spp. 



Distribution. — ^United States: Texas., Dallas, Freeport, Utopia, 

 College Station (Oct.), Brownsville; Mississippi, Biloxi (Sept.); 

 Oklahoma, Wichita National Forest (June) ; Florida. Altamont 

 (Sept., Oct.), Key West, Lakeland (Apr.), Crescent City (May), 

 Miami (Oct.), St. Petersburg (March, June, Sept., Oct.), Fort Meade 

 (Apr.), Fort Myers (Apr.), Venice (May); North Carolina, South- 

 ern Pines (June) ; Delaware, Indian River Bay (July) ; New Jersey, 

 Lakehurst (Sept.) ; New York, Rye (July). 



Eighty-two specimens examined. 



Remarks. — Hulst, Ragonot, and, for several years, Dyar regarded 

 loUii as nothing more than a synonym of prodenialis, and it has so 

 appeared in our lists. Dodd treated it as a distinct species and ap- 

 plied the name to specimens from a restricted area in southern Texas. 

 In a letter dated July 7, 1936, he writes me that "what we call M, hol- 

 lii is a form with certain constant differences in habits and life-cycle 



