38 



with long silky brown hair. Underside — Superiors have the spots repeated. 

 Inferiors are gray, with a varying number of small white spots — one specimen 

 having two and the other five. The female is larger and has the same number 

 of spots as the male; the three subapical spots white and the remainder yellow; 

 in the female the five spots on the wing are in two series, the two upper being 

 nearer the exterior margin, and the three lower are nearer the base; in other 

 words, they do not form a continuous line as in the male." 



Besides the secondary sexual characters already mentioned, the 9 

 shows the usual tendency to enlargement of the band of pale spots 

 on the primaries, characteristic of the whole genus. 



The species is quite variable; in a series of 14 S 's and 13 9 's 

 before us we have noted the following points. In the S the size 

 varies from 50 mm. to 63 mm. wing expanse ; the shape of the spots 

 of the subterminal yellow band is very variable; the normal size of 

 these spots is about as in our figure, they occasionally, however, are 

 considerably larger, but never so large as in the 9 ; on the underside 

 the spots show a tendency to disappear ; our fig. 3 shows a well marked 

 specimen ; we have others in which the subterminal band of primaries 

 is almost lacking and others again where the white spots of the sec- 

 ondaries are reduced to the two near the costal margin and the one 

 at anal angle, the places of the missing spots being occupied by dark 

 blotches ; occasionally these spots are as large and numerous as in the 

 9 specimen (Fig. 4). 



The 9 is apparently less variable in size, most of our specimens 

 averaging about 62 mm. As in the $ sex the size and shape of the 

 subterminal spots is variable; Fig. 2 exhibits the greatest reduction 

 in size we have seen. Above the inner margin near base of wing on 

 primaries there is occasionally a small yellow spot as in the ncumocgcni 

 group, and on the secondaries a minute patch of yellow scales between 

 veins M., and AL, may indicate the position of the subterminal row of 

 spots found in other species. As a rule the white spots on underside 

 of secondaries are larger than in the S sex and show a tendency to 

 coalesce near the anal angle, forming a more or less irregular band. 



The claw segment (PI. Ill, Fig. 10) is spined and laterally 

 haired as is customary. The pulvillus is longer than usual, very nar- 

 row, swelling slightly subapically and then drawn out to a fine point; 

 the paronychium is bilobed, both lobes being narrow and finger-shaped. 



Genitalia. S. The Uncus (PI. IV, Fig. 14) is drawn out into a 

 long narrow spatulate process with truncate and slightly hollowed 

 out apex ; the lateral incisions at the base are not developed ; the Gnath 



