PAPILIO I. 



PAPILIO NITRA, 1-4. 



Papilio Nilra (Xi'-tra), Edwards, Papilio, III., p. 162. 1883. 



The sexes alike in color and markincrs. 



D 



Male. — Expands 3 inches. 



Upper side black, spotted and banded with yellow after the manner of the 

 Asterias gronp ; the sub-marginal spots of primaries rounded next apex, the 

 rest ovate, of secondaries semicircular, the one next inner margin sub-crescent ; 

 the common discal band composed of long separated spots, the anterior ones on 

 primaries lanceolate, the others truncated and not definite on the basal side ; an 

 oval spot in the subcostal interspace and a crescent bar inside tlie arc of cell ; 

 on secondaries the band covers about one fourth the cell ; tlie spot at anal angle 

 yellow, on which is an orange ring about a round black spot ; on the extra-discal 

 black area loose clusters of black scales entirely across the wing. 



Under side pale black, the markings repeated, pale ; the extra-discal area on 

 secondaries dusted lightly with yellow scales, and above these blue scales about 

 a rather dense nucleus of same, particularly in the median interspaces ; the anal 

 ring deep orange-fulvous. 



Body black, the wing-covers yellow, the abdomen showing a slight lateral 

 stripe from base of wing to last segment ; legs and palpi black ; the frontal hairs 

 black, yellow at the sides; antenna) and club black. (Figs. 1, 2.) 



Female. — Expands 3.3 inches. 



Spotted and banded as in the male, the upper spots of discal band sub-ovate ; 

 the yellow paler ; under side without orange in the interspaces except the median. 

 (Figs. 3, 4.) 



NiTRA was described from a single pair taken by Wm. M. Courtis, M. E., in 

 Judith Mountains, Montana, July, 1883. Mr. Courtis wrote me that he saw 



