PL. CXIII
(1) Papilio ajax Linnæus. Winter form walshi Edwards, [Plate CXII], ♂; summer form marcellus Boisduval, [Plate CXIII], ♂ (The Papaw Butterfly).
The species is more or less polymorphic. [Plate CXII] represents the form which emerges in the spring of the year from chrysalids which have overwintered; [Plate CXIII] shows the form which appears in the second brood and in which the tails are twice as long as in the first. There are other forms. Expanse 2.50-3.25 inches.
The caterpillar feeds upon the leaves of the Papaw ( Asimina triloba) and wherever this plant grows the insect may be found. It ranges from New England and Ontario to Florida and far westward through the valley of the Mississippi.
PL. CXIV
PL. CXV
(2) Papilio turnus Linnæus, [Plate CXIV], ♂; [Plate CXV], P. glaucus Linnæus, dark dimorphic ♀, under side (The Tiger Swallow-tail).
In the Middle States and southward a large proportion of the females are black, belonging to the form glaucus; in Ontario and northward and westward to Alaska the females are yellow, like the males. The Alaskan form is very small, dwarfed by the cold and poor feeding. The figure on [Plate CXIV] is that of a male from Alaska of the natural size; a specimen taken in Pennsylvania would be nearly twice as large. The metropolis of the species is the Appalachian uplift; but it ranges northwestward to Alaska and south to the Gulf States. Expanse 3.00-5.00 inches.