PAPILIO X. 
PAPILIO BAIRDII, 1—4. 
Papilio Bairdii, Edwards, cf, Proc. Eut. Soc., Phil., Yol. YI., p. 200, 1866. ?, Edw., Can. Ent., Vol. XI., p. 83, 1879. 
Primaries much produced, strongly arched, the hind margins concave; tails 
long, sub-spatulate ; the sexes differ in ornamentation. 
Upper side black ; primaries have a submarginal series of eight small yellow 
spots, those next apex rounded, the others lunate; secondaries have a similar 
series of six spots, the one at outer angle small, sometimes wanting, at inner 
angle narrow, the others large, irregularly lunate; a common yellow band crosses 
the disks, composed on primaries of eight large spots, the first of which is long 
and pointed, but the basal half is nearly or quite wanting, owing to a circular 
sinus on costal side ; the second to sixth are sub-triangular, the seventh sub¬ 
quadrate, the eighth long and narrow; these spots, from second to eighth, are 
sometimes all truncated on the inner side; in other cases only the last three or 
four, and fade gradually into the black ground; most of them are also excavated 
on the outer side ; in the upper sub-costal interspace a rounded spot; on the 
arc of cell sometimes an obsolescent yellow stripe, and another in the cell at 
about one third the distance from arc to base ; but in some examples no trace of 
these stripes is seen; the costal margin above the band is dusted yellow ; on sec¬ 
ondaries the band consists of seven spots, usually separated by the nervules only, 
but in some cases these spots are reduced and separated by considerable 'spaces; 
in some examples the breadth of the band is reduced from one half to two thirds; 
'the space between the band and the marginal spots is broad, black, and occupied 
by clusters of blue scales, which increase in density towards inner margin; some¬ 
times, however, these clusters are wanting ; above the incision at anal angle is a 
fulvous ring on yellow ground, inclosing a rounded black spot; this ring is usu¬ 
ally incomplete, the spot being joined to the black edge of the wing; above the 
ring is a blue crescent of densely laid scales ; fringes yellow, alternating with 
black, yellow in the emarginations of secondaries. 
