6 University of Michigan 



identity of the several spots is lost in the uniformly col- 

 ored area; area anterior to spots a and b yellow tinged 

 in the female, hyaline in the male, with an added spot or 

 stripe (e) in both sexes which extends from the wing 

 base between So and R and to a lesser extent between C 

 and So along So at a minimum to the first antenodal and 

 at a maximum to slightly beyond the third; at the distal 

 end thisj spot e may be joined with b, spots a and b joined 

 by a colored area in the median space, thus differing from 

 amanda, which has a and b not joined and which lacks the 

 spot c; spots a and c not joined in the female, joined or 

 not along the wing margin in the male; spot d present or 

 lacking in both sexes, usually at least a trace of it present 

 and| often it joins spots b and c ; wing veins black or dark 

 except sometimes some of the antenodals which may be 

 paler; costa at base always brown to black; veins in the 

 colored area of the hind wing of females and younger 

 males yellow, in adult males dark brown or black. A close 

 relative of ornaia, which it most resembles in wing colora- 

 tion and from which it is separated at once by the color 

 of the thorax and by having only two rows of cells between 

 M^ and Cu^^ in the front wing at about the level of the 



nodus martha, n. sp. 



7 (5')- Triangle of front wing followed by three cells, followed by 

 three (81.54% of 65 wings examined). Side of abdominal 

 segment 4 with a large quadrangular black area which 

 reaches the median transverse carina in front and is pro- 

 duced dorsally behind to encircle the segment (in some 

 tenerals there is a pale colored streak in the black area) ; 

 5-10 similar to those of martha, male appendages black. 

 Black at base of frons in both sexes regardless of age more 

 extensive than in the females and the youngest males of 

 martha, being about half again as wide; in oriiata this 

 pattern is retained even by the oldest males and in no 

 case is there the subsequent loss of pattern and entire 

 blackening of frons and face which occurs in ageing males 

 of martha; the face darkens with age in ornata, but it 

 remains yellow or yellowish brown ; frontal vesicle largely 

 pale colored, darkening to yellowish or greenish brown 

 with age. Thoracic markings similar in the two sexes; 

 dorsal black stripe large, quadrangular in shape, the lateral 

 margins concave; humeral black stripe v/ide, widened near 

 its upper end so the pale area on either side enclosed by 

 the dorsal and humeral black areas is elliptical below, con- 

 stricted above and, following this constriction, again 



