8 University of Michigan 



In the most reduced females the frong wing is entirely 

 hyaline and in the hind wing only spots a and c remain 

 as small, narrow streaks with the area between them yel- 

 low tinged; the cubito-anal crossvein is dark edged, but 

 otherwise the cubital space is unmarked, being yellow tinged 

 basally to the cubito-anal crossvein, and hyaline distally. 

 In the darkest females in the front wing the first two ante- 

 nodals of the second series and the cubito-anal crossvein 

 are dark edged and the cubital space is yellow tinged as 

 far as the level of the arculus ; in the hind wing e extends 

 to the first antenodal of the second series and the second 

 and third antenodals of the second series are broadly dark 

 edged; a and b are present and joined; c is present and 

 is a little larger than a; there is no trace of d. Costa in 

 adult males brown or yellowish brown at base, yellow and 

 brown in females and younger males ; venation dark or 

 black except usually some of the antenodals, which are 

 yellow or yellowish, and the veins in the colored area of 

 the hind wing, which are yellow in females and younger 



males and red in adult males ornata. 



7'. Triangle of front wing followed by three cells, followed by 



two cells for one-three rows, then three (94.74% of 76 

 wings examined). Side of abdominal segment 4 black as 

 in ornaia, but with a pale spot, usually triangular in shape 

 in the black area, the pale spot, with its apex directed pos- 

 teriorly, often reaching from the median transverse carina 

 posteriorly along the lateral carina almost to the apex of 

 the segment, so the black in such cases is reduced to a 

 triangular area, lying dorsal to the pale spot, with its apex 

 directed anteriorly, and extending from the base of the 

 segment to the median transverse carina; 5-10 similar to 

 those of ornata; superior appendages of male with the 

 apical half above yellowish brown or brown, becoming 

 black in the oldest specimens; inferior appendage and base 

 of the superiors black; (in martlia the base of the superior 

 appendages in younger males is pale; in bertha the base is 

 dark and it is the apex which is pale). Black at base of 

 frons slightly more reduced than in martha; in the males 

 the frons never blackens with age, but the entire face and 

 frons, except the basal black, changes from yellowish or 

 greenish to bright red ; frontal vesicle largely pale colored, 

 becoming dark red in adult males. Thoracic markings dis- 

 similar in the two sexes ; in the female similar to that of 

 ornata with the dorsal black area usually somewhat more 

 reduced so the pale antehumeral stripe is wider and less 



