alis, elegans, hortensis,
Novaeboracensis, and signifer. Figure 156 represents a species found in
Maine.)

Dicyrtoma. Antennae eight-jointed, five before, three after the bend. Two
dorsal tubercles on the abdomen.

Papirius.[12] Antennae four-jointed, without a well-marked elbow, and
with a short terminal segment offering the appearance of being
many-jointed.

PODURIDAE.--This family comprises those species of the old genus Podura,
in which the mouth has mandibles [also maxillae and a labium], and the
body is elongated, with a more or less developed saltatory appendage at
the posterior extremity.

Orchesella. Segments of the body unequal in size, more or less thickly
clothed with clubbed hairs. Antennae long, six-jointed. Eyes six in
number on each side, arranged in the form of an S. (One or two beautiful
species live about Salem.)

[Illustration: 168. Degeeria.]

Degeeria. Segments of the body unequal in size, more or less thickly
clothed by clubbed hairs. Antennae longer than the head and thorax,
filiform, four-jointed. Eyes eight in number on each side of the head.
(Two species, Degeeria decem-fasciata, Pl. 10, Figs. 2, 3, and D.
purpurascens, Figs. 4, 5, are figured in the "Guide to the Study of
Insects." Figure 168 represents a species found in Salem, Mass., closely
allied to the European D. nivalis. Five species are already known in New
England.)

Seira. Body covered with scales. Antennae four-jointed; terminal segment
not ringed. Eyes on a dark patch. Thorax not projecting over the head.
Abdominal segments unequal.

Templetonia. Segments of the body subequal, clothed by clubbed hairs,
and provided with scales. Antennae longer than the head and thorax,
five-jointed, with a small basal segment, and with the terminal portion
ringed.

Isotoma. Four anterior abdominal segments subequal, two posterior ones
small; body clothed with simple hairs and without scales. Antennae
four-jointed, longer than the head; segments subequal. Eyes seven in
number on each side, arranged in the form of an S. (Three species are
found in Massachusetts, one of which (I. plumbea) is figured on Pl. 10,
Figs. 6, 7, of the "Guide to the Study of Insects," third edition.)

Tomocerus. Abdominal segments unequal, with simple hairs and scales.
Antennae very long, four-jointed, the two terminal segments ringed. Eyes
seven in number on each side. (The European T. plumbea, Podura plumbea
of authors, is our species, and is common. Fig. 16