THE CACTUS-FEEDING PHYCITINAE — HEINRICH 351 



dusted with white; area between lower vein of cell and inner margin 

 and from base to subterminal line suffused with ocherous-f uscous ; 

 on the middle of this area a more or less extended smudge of blackish 

 brown ; antemedial line black, bordered inwardly by a line of white 

 scales, dentate and sinuate, a sharp dentation at vein 11, a longer one 

 in the cell (extending nearly to middle of wing), another equally 

 long and acute dentation at the fold, and two very slight dentations 

 between lb and inner margin; subterminal line black with a white 

 outer border, dentate and sinuate, the angulations deep, the angula- 

 tion between 5 and 6 reaching almost to cell ; area beyond subterminal 

 line dark fuscous, paler in some specimens; along termen a row of 

 black dots at the vein ends; discal black dot at end of cell conspic- 

 uous in most specimens. Hind wing white, semihyaline ; costal mar- 

 gin bordered with fuscous and a fine dark fuscous line on termen 

 for a short distance from apex. 



Alar expanse, 35-45 mm. 



Genitalia (figs. 7-7c) over twice as large as those of hidentella; 

 aedeagas more extensively sclerotized. 



Female. — Similar to the male in color and markings except that, 

 in many specimens, there is a somewhat stronger fuscous shading in 

 the apical area of the hind wing. Labial palpi longer than those of 

 the male. 



Alar expanse, 36-48 mm. 



Genitalia (figs. 45-45a) lal-ger than those of the other species of 

 the genus and with scobinations in bursa finer. 



Eggs laid singly or in masses of two or three. 



Type. — In United States National Museum. 



Type locality. — Cerritos, San Luis Potosi, Mexico. 



Food plants. — Opuntia {Cyliridropuntia) imhricata (Ha worth) 

 and probably several other Cylindropuntias. 



Distribution. — United States: California, San Diego, Warner 

 (Sept.), Palm Springs (Apr.), Oceanside (Aug.), Riverside (Oct.); 

 Arizona, Christmas (Gila County), Fort Grant (July), Oracle 

 (July), Redington, Santa Catalina Mountains (Sept.), Baboquivari 

 Mountains (Apr., June, July, Aug., Sept., Oct.), Sells P. O. (Indian 

 Oasis, Apr.), Douglas (June, Sept.), Mohave County (Aug.) ; Texas, 

 Presidio County (July) , Brewster County. Mexico : San Luis Potosi, 

 Cerritos (Aug.), Tamaulipas, Tula (June). 



Ninety-five specimens examined. 



Remarks. — The specimens before me are remarkably uniform in 

 color and markings except for a male from Texas and two males 

 from Riverside, Calif. These are darker than normal parahates. 

 In the Riverside specimens there is no appreciable white dusting 

 on head, thorax, or fore wing. The fore wing is almost entirely 

 suffused with blackish scales, and the pale areas and lines (normally 



