1284 THE BUTTERFLIES OF NEW ENGLAND. 



posterior face largest, the tubercle directed almost wholly forward; the ridge upon 

 the sides of the body is represented behind this only by a small, rough, not expanded 

 tubercle, just beliind and below the spiracles of the second and third abdominal seg- 

 ments and by a series of infrastigmatal, minute warts, immediately beneath the spiracles 

 of the succeeding segments; a good many minute warts are scattered over the second 

 to the fourth abdominal segments, and in addition to these there is a laterodorsal series 

 of larger rugulose warts on the metathorax and the flrst and fifth to ninth abdominal 

 segments, a low, lateral tubercle on the metathorax and an indistinct series of clus- 

 tered lateral warts on most of the abdominal segments ; on the seventh and succeeding 

 segments the abdomen is indistinctly ridged along the laterodorsal and infrastigmatal 

 lines; median portion of the preanal button swollen, terminating anteriorly in a 

 broad, recumbeut, forward directed, depressed lobe, notched in the middle. Cremas- 

 ter pretty long and broad, twice as broad beneath as above, tapering considerably, 

 docked at tip, quadrilateral, the edges broadly and greatly carinate. between which the 

 surface is deeply hollowed, excepting beneath where it is flat and broad, the apical field 

 of a similar shape, the area of the booklets transversely and broadly ovate or quad- 

 rangular. Ilooklets about 125-150 in number, shaped as in Euphoeades, but not so 

 long or large, with a proportionally larger cup. 



Jasoniades and Papilio are tlie only genera of swallow-tails peculiar to 

 temperate regions. Jasoniades is further confined to North America if 

 we except a single species, the Papilio antinous of Donovan, of which a 

 single specimen has been reported from Australia ; a species which Double- 

 day regarded as the same as our E. glaucus ; several species occur in the 

 New World but only one east of the Mississippi which has, however, an 

 immense distribution, from Alaska in the northwest to Florida in the 

 soutlieast. Its northern distribution, given in detail under the species, is 

 also the limit of the generic dispersal, but other species are found south of 

 these boundiu-ies ; none occur in the Antilles and probably none on the 

 continent south of Mexico. 



The butterflies are large, often among the largest of the old genus 

 Papilio ; the outer border of the fore wings is nearly straight ; the hind wings 

 are provided with from one to three tails, generally rather long and spatulate, 

 and where the wing is not tailed the border is wavy. The ground color is 

 yellow (in one species a secondary female is so suffused with black as 

 almost entirely to have lost every trace of yellow), transversely striped 

 and broadly bordered with black, the boi'der enlivened by small, submar- 

 ginal, yellow lunules ; the fore wings have four stripes which are always 

 heaviest next the costal border and often not longer than the width of the 

 cell, but the innermost, which crosses neai; the middle of the cell, always 

 traverses the entire wing and is continued upon the hind wings as a nar- 

 row, tapering stripe running toward and almost reaching the anal angle. 

 A pseudocellus is found at the anal angle and beneath, where the 

 markings of the upper surface are repeated ; the black border of the hind 

 wing is more or less heavily powdered with bright blue scales. The genus 

 is peculiar among our Papilioninae for the brevity of the middle and hind 

 tarsi, the rather unusual length of the hind femora and the equality of the 

 three principal members of the hind legs. 



