PAPILIO III. 
AJAX.— Vak. MARCELLUS, Boisduval. 
Primaries in both sexes equally and largely produced, hind margins much 
excavated; costa less arched than in Telamonides; secondaries more produced; tail 
longer and broader; thorax covered with short hairs; frontal hairs very short. 
Male. — Expands from 3.2 to 3.5 inches. 
Color deep black, the borders and black bands broader than in either of the 
other varieties; the light portions pale blue-green in fresh specimens; the stripe be- 
tween the forks of mesial black band reduced to a mere streak; the two common 
green bands terminate on secondaries higher up the wing by nearly the width of 
one interspace; the tail very long and broad, bordered and edged as in Telamonides; 
the crimson band reduced to a single lunate spot of variable size, and occasionally 
wanting, with very rarely a second spot, always minute; the two middle lunules 
on the margin distinct, the other two more or less obsolete; a greenish band at 
base of both wings, on secondaries following the edge of the abdominal fold. On 
the under side the light portions tinted with buff, especially on cOsta and along the 
principal nervures and either edge of the black common band; two crimson anal 
spots ; otherwise as in Telamonides. 
Body above black, the thorax covered with short grey hairs; beneath wholly 
bright yellow, except a narrow black stripe extending from the head to end of ab- 
domen, passing beneath the insertion of the wings, and a stripe along lower part 
of thorax and abdomen; a short black line inside the yellow space just before the 
last segment of the abdomen; palpi yellow; front of head furnished with very short 
hairs, black in front interspersed with yellow next the eyes; antennae reddish; club 
same, reddish-brown beneath. 
Female. — Expands 3.5 inches. 
The green bands of deeper color and narrower, leaving the surface very black. 
In many cases the green shade is replaced by a soiled or buff-white with no trace 
of green. The second crimson spot appears more often than in the male. 
Marcellus differs from the other varieties by its increased size and blackness 
of wings and by their shape in both sexes, by the absence more or less complete of 
one or two of the yellow marginal lunules, by the substitution of a single large lu- 
nate crimson spot, occasionally accompanied by a crimson point, in place of bar of 
Walshii, or the double and usually equal spots of Telamonides. It also differs from 
the latter in the proportionate length and breadth of tail; is still more yellow on 
throat and thorax; the short frontal hairs are yellow and black, and the palpi 
are yellow. 
