Fig. 27.—Geophilus longicornis. (From C. L. Koch, Die Myriapoden.)
Order III. Schizotarsia.
The tarsi of all the legs multiarticulate. The eyes facetted. Peculiar sense organ beneath the head.
Family 1. Cermatiidae (Scutigeridae)
Antennae with unequal number of joints. Body rings, each with one pair of legs. Dorsal scutes not so large as ventral. Limbs long and multiarticulate. (Fig. 17, p. [35]).
Order IV. Symphyla.
Myriapods resembling Thysanura. A pair of limbs to each segment. The antennae are simple and multiarticulate with unequal joints. Eyes few. Mandibles short. One pair of maxillae. No maxillipedes. Genital orifice in the last segment of the body. A single pair of tracheae. Two abdominal glands on the posterior part of the body. Two caudal appendages. Free dorsal scutes. Ventral scutes often with parapodia.
Family 1. Scolopendrellidae.
With the characters of the Order.
Order V. Pauropoda.