496 PROCEEDINGS OF THE NATIONAL MUSEUM vol. los 



Tatochila vohcemi 9 forma obsura Kohler, Zeitschr. Wiss. Insektenbiol., vol. 18, 



Sonderbeilage, p. 14, Dec. 15, 1923. 

 Tatochila vanvolxemii (Capronnier), Hay ward. Act. Zool. Lilloana Inst. "Miguel 



Lillo," vol. 9, p. 92, Oct. 25, 1951. 



Venation: As illustrated (fig. 60). 



Legs: With paronychium, claw, and pulvillus as illustrated (fig. 76). 



Male: Plate 4, figures 15, 15a; plate 5, figure 16. Head with outer 

 surfaces of palpi white. Scales behind eyes orange. Forewing above 

 white with dark brown markings as illustrated, usually having a large 

 black discocellular bar. Variable in having a few dark scales along 

 either side of the ends of the veins in the apex of forewing (the usual 

 form) to having a heavy black sagittate, submarginal and subapical 

 band with the markings along the veins extending inward through 

 this band (this form more rare). Hindwings above entirely white. 

 Wings below white with a pale yellow suffusion over hindwing espe- 

 cially in the base and around outer margin of this wing and in apex 

 of forewing. Costal margin of hindwing orange. Veins on hindwing 

 and in apex of forewing white outlined on both sides with faint black 

 lines along outer margin and frequently for considerable distance 

 inward. 



Length of forewing, 26.5-32 mm. (average, 29.9 mm.). 



Male genitalia as illustrated (figs. 32, 46). Not different from T. 

 microdice and illustrated here to show how closely related it is to 

 that species. The genitalia of 15 males were studied. 



Female: Plate 5, figures 16a, 16b. Head as in the male with 

 outer surfaces of palpi white and with scales behind eyes orange. 

 Wings above with ground color pure white to dirty white or very 

 pale tan. Karely pale yellow over much of hindwing and around 

 outer third of forewing. Dark brown to black markings as illustrated, 

 differing greatly from the male, with discocellular bar on forewing 

 usually much larger both above and below and with submarginal row 

 of sagittate markings large, confluent and strongly indicated even on 

 the hindwing. Marginal sagittate markings and the black or brown 

 scaling along veins extending inward to the cell along some veins in 

 forewing and extending almost to the base along some veins in many 

 specimens on the hindwings. Wings below with ground color of 

 hindwing and apex of forewing yellow and with veins in these areas 

 white completely outlined along either side with dark brown. Hind- 

 wing with costal margin orange, with a brown bar through middle of 

 cell that is divided by a thin line of white or yellow and with a large 

 white spot over lower discocellular vein. This latter larger than in 

 mercedis. Submarginal row of confluent sagittate markings strongly 

 indicated on forewing and also present on hindwing although more 

 weakly indicated. . 



