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.)