[CONTENTS.]
EXPLANATION OF PLATES.
PART I.—HARVESTING ANTS.
[Plate I.], p. 21, fig. A.—View of the entrance to a nest of Atta barbara, showing part of a train of ants bearing seeds, the conical mound of refuse thrown out, and some seedlings, which have sprung up from seeds accidentally dropped by the ants; B, one of the larger workers of this species, of the natural size, and B 1, its abdomen and pedicle, with two nodes, magnified; C*, one of the smaller workers, of the natural size; C, a male, of the natural size; D, a female, of the natural size; D 1, wing of the same, magnified; D 2, mouth organs of the same, magnified, with the mandibles removed, the two outer pieces being the maxillæ and their palpi, and the lozenge-shaped piece the labium, from the upper part of which the labial palpi spring, while behind the labium is the true tongue; D 3, one of the mandibles, magnified; E, a larva, of the natural size, and E 1, the same, magnified.
[Plate II.], p. 22, fig. A.—A trowel containing earth, in which a granary full of seeds is lying almost undisturbed, of the natural size; B, the crater-like entrances found at the mouths of the nests of Atta structor, reduced to one-half the natural size.