and remarks on the Genus Papilio. 411 



Wings slightly denticulated, edged with cream color in the 

 crenae or notches. 



On the upper side : the anterior pair are black, marked by a 

 row of white spots (obsolete, or nearly so, in many specimens) 

 parallel to the hind margin ; the posterior pair are also black, 

 glazed over with greenish or bluish/ shining scales, except at the 

 base, and have a row of six whitish lunules near the hind margin. 

 Tails short and narrow, greenish, bordered with white at their base. 

 On the under side: the anterior wings are somewhat duller 

 than on the upper, and are ornamented with a marginal row of 

 four or five distinct yellowish spots. The posterior wings are 

 washed with very brilliant greenish blue, except at the base, 

 which is black and marked with a yellow spot ; they are also dis- 

 tinguished by a marginal row of seven lunules of a lively yellow, 

 surrounded by black, and all but the last bordered with white on 

 their external margin ; these lunules correspond wi£h the white 

 ones of the upper surface. Inside this marginal row of lunules, are 

 generally four white dots. 



The body is blackish tinged with green, with a lateral line 

 of yellow dots. The Antennas are black. There is but little dif- 

 ference between the two sexes. 



The Larva is brown, with two lateral series of small reddish tuber- 

 cles. It is provided with two long spines on the first segment, and 

 on the sides near the feet, it has nine of moderate length, and others* 

 also of moderate length, are placed upon the three last segments* 

 It lives on the Virginian Snakeroot {Aristolochia Serpentaria). 



The Butterfly appears in Spring or the beginning of Summer? 

 and, according to Boisduval, is common in all North America 

 wherever the Snakeroot flourishes. In a paper " on the Diurnal 

 Lepidoptera of Northern and Midland Ohio," read before the 

 Cleveland Acadamy of Natural Sciences, January 1 7th. 1854, and 

 to which we have frequently had occasion to refer, Prof. J. P. Kirt- 

 land observes, that this species " was among the most rare of our 

 butterflies until I introduced into my garden a few plants of the 

 Aristolochia Sipho and pubescens. Since then they have multi- 

 plied in immense numbers." 



Aristolochia Sipho (Pipe Vine, or " Dutchman's Pipe ") grows 

 most luxuriently in some of the gardens in the neighborhood of 

 Montreal, climbing over verandahs, &c, the leaves frequently 

 measuring 12 X 13 inches, and we are not without hopes that 

 this beautiful butterfly may therefore eventually extend its range 

 even into Lower Canada. Prof. Emmons describes it in his In- 



