94 
SWALLOW-TAIL BUTTEKFLV. 
Papilio Machaon. 
PLATE IV. Fig. 1. 
Linn. Donovan, vi. 75, pi. 211 — Lewin's Insects of Great 
Britain, pi. 34. 
This elegant insect is tbe largest of our indige- 
nous butterflies, the female being sometimes found 
to measure upwards of three inches and a half be- 
tween the tips of the wings. The base of the up- 
per wings is black, powdered with yellow ; a large 
portion of the apex is of the same colour, and adorn- 
ed with a row of eight semicircular yellow spots, pa- 
rallel with the outer margin, which is narrowly edged 
with yellow : the central portion of the wings is yel- 
low, spotted with black, the latter colour forming 
three large patches towards the anterior margin, and 
running in a broad line along the nervures. The 
basal half of the under wings is yellow, except the 
inner side, which is black, and covered with yellow 
haire, and the curved nervure on the under side of 
the discoidal cell, which is defined by a black streak : 
the other nervures are dusky. Beyond the yellow 
portion there is a broad black band, ornamented with 
