Occasional Papers of the Musemn of Zoology 5 



pale colored, the labrum and frons yellower, the frons in 

 younger males and in females with black at base as in 

 amanda; at an early age the entire frons of the male 

 becomes dark or black and in the oldest specimens the 

 entire face is black with the frons shining black; frontal 

 vesicle pale colored over a limited area at the apex only, 

 if at all, usually light brown, darkening with age, shining 

 black in the adult male. Dorsal thoracic dark area wider 

 than in amanda, always distinctly widened above; on either 

 side the mesepisternum with a large, rounded brown spot 

 which attains the upper and lower extremities of the scle- 

 rite only along the humeral suture ; a small brown area 

 above and including the metastigma, and a less distinct 

 narrow stripe above on the second lateral suture ; this 

 thoracic pattern is soon lost by maturing males which, in 

 the oldest individuals, have the thorax and abdomen black, 

 the thorax shining and bluish. Abdominal segment 3 yel- 

 low with an apical black ring produced anteriorly on the 

 side nearly or quite to the inedian transverse carina ; 4 with 

 this anteriorly directed black expanded into a quadrangular 

 lateral stripe which parallels and includes the lateral carina 

 and reaches the median transverse carina; 5-10 similar to 

 amanda with the yellow spots on 5-7 slightly smaller ; supe- 

 rior appendages of male darker apically, the base yellowish 

 brown till in the mature specimen, when the appendages, 

 like the entire abdomen, become black. Wing markings 

 very variable; the front wing of the males hyaline, some- 

 times with a trace of yellowish at the base, and the first 

 antenodal of the second series clouded; in the females at 

 the minimum in the front wing the first antenodal of the 

 second series and the cubito-anal crossvein are slightly 

 edged or clouded and there are basal tinges of yellowish; 

 at the maximum the base of the front wing, excepting the 

 areas on either side of the arculus, is yellowish tinged as 

 far as the third antenodal and the proximal side of the 

 triangle with the three basal antenodals of the second series 

 and the cubito-anal crossvein edged to form rounded spots. 

 Base of hind wing yellow tinged and brown marked at a 

 minimum to scarcely the level of the second antenodal, in 

 which case spot b is reduced, and at a maximum to slightly 

 beyond the third antenodal ; in some cases the entire col- 

 ored area is brown with little or no yellowish, though the 

 area enclosed or bordered by spots a, b, c and d is always 

 yellow in the female and usually so in the male; in other 

 cases in the male this area is brown or black and the 



