10 NORTH AMERICAN BUTTERFLIES. 



fore wings also ^yellow, and tlie line at the end of the cell is prolonged 

 along the vein inwardly. This singular butterfly of which only two 

 specimens are known, (one taken on Long Island in August, 18G3, by 

 Mr. Louis Fischer, and the other near Enterprise, Florida, in April, 

 18G9, by Mr. T. L Mead,) Mr. W.H.Edwards considers only as an 

 aberrant form of asterias with the colors sufiused to an extreme degree. 

 (See remarks under head of Suffusion in the introduction.) I am in- 

 clined, however, to look upon it as an example of reversion toward some 

 unknown ancestor. 



13. PAPILIO TROILUS Linn. 



Green-spotted Swallow-tail. 



Similar to P. asterias, but differs in having the tails rather shorter 

 and wider. Fig. 8, d ; in the absence of the inner band of spots on upper 

 side of the hind wings, this being represented by orange-washed spots, 

 one on the upper border and the other at the inner angle, this being 

 without the black center ; and in the band above on the hind wing us- 

 ually being green instead of blue. Beneath, there are only six orange 

 tinted spots on the inner band on hind wings, the third one from the 

 lower margin being omitted and is replaced by an arrow shaped mark 

 of somewhat defused, greenish scales. 



Habitat, Atlantic States from Mass., southward, and also the West- 

 ern States. Occurs in April in Florida and disappears in November; 

 in Mass., appears in June and disappears in September. 



14. PAPILIO PALAMEDES Dru. 



Broad-winged Swallow-tail. 



Wings, proportionally short and broad, with the tails broad and 

 somewhat expanded terminally. Fig. 8, a. Above, dark reddish brown, 

 with two rows of yellow spots crossing both wings, the outer of which 

 are oval on the fore wing, but crescent-shaped on the hind Aving ; the 

 upper on the fore wings are placed out of line the width of the spot 

 nearer the outer border ; in this row on the fore wings they are trian- 

 gular, inclined to be crescent-shaped, but near the lower border and)n 

 the hind wings they are fused into a continuous band. Within these 

 bands, near the upper border of the fore wings, is a triangular spot, and 

 there is a dash crossing the central cell near the outer portion. In the 

 inner angle of the hind wings is a black spot, enclosing a bluish cres- 

 cent, and above and below it arc orange edgings. Between the two 

 light bands on the hind wings are obscure spots of blue, surrounded by 



