142 
[September 
black hairs; thorax above, black, below spotted with yellow; abdo¬ 
men, greenish-black, with three rows of yellow, and one row of white 
streaks on the sides, a yellow band below; femora and tibim grayish, 
tarsi, black. 
Wings, greenish black, shining; expanse 4.83 inches. Anterior 
wings, sinuate, extremities, dark brown ; a marginal row of five yellow 
sagittate spots, arcuated interiorly; the first in the disco-central area, 
is very small; the second, occupying the medio-superior interspace, is 
the largest, extending to the cell; the three following decrease in size, 
as they approach the posterior angle; the fifth, is almost bisected by an 
interruption of the ground color. The costal nervure and first sub-costal 
nervule, are margined with whitish-green, above the insertion of the 
apical nervule. 
Posterior wings, dentate; a macular band, yellow, on the disc, com¬ 
posed of seven spots; the first is doubly concave; the second, recti¬ 
linear ; the third, oblong; the fourth, fifth and sixth, oval; the seventh, 
round and minute ; a marginal row of obsolete yellow lunules; crena- 
tions, yellow. 
Under side, base of primaries black with greenish reflections; disc, 
light brown; the arcuate band is more distinct than above; the first 
spot is omitted, the second, lengthened, passing into the discoidal 
cellule, the fifth, bisected by the sub-median nervure; costa margined 
with yellow. Secondaries, coppery, metallic; a marginal row of seven 
spots, red bordered with black, resembling chevrons in form. 
Gruatemala. 
This, one of the largest species of that group, which Htibner desig¬ 
nated as the sub-genus, Ithobalus, and of which P. Polj/damus is our 
only indigenous representative, was found near Copan. Distinguish¬ 
able from all congeneric associates by the arcuated band on the anterior 
wings, the lustrous brilliancy of its upper surface is alone surpassed 
by the Morphidae. 
