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The hypopharynx, our “labiella,” (Fig. 6), with the supporting rods or stili linguales (sti. l), of Meinert, are of nearly the same shape as in some insects.

Of the clypeus of insects there is apparently no homologue in myriopods, though in certain diplopods there is an interantennal clypeal region. The labium of insects is represented by a short, broad piece, which, however, unlike that of insects, is immovable, and is flanked by a separate piece called the epilabrum (Fig. 8). Vom Rath has observed an epipharynx, which has the same general relations as in insects.

Fig. 9.—Larva of Julus: a, the 3d abdominal segment, with the new limbs just budding out; b, new segments arising between the penultimate and the last segment.—After Newport.

The embryology of myriopods is in many respects like that of insects. The larva of diplopods hatches with but few segments, and with but three pairs of limbs; but these are not, as in insects, appended to consecutive segments, but in one species the third, and in another, Julus multistriatus? (Fig. 10), the second, segment from the head is footless, while Vom Rath represents the first segment of an European Blaniulus as footless, the feet being situated consecutively on segments 2 to 4. The new segments arise at “the growing point” situated between the last and penultimate segment, growing out in groups of sixes (Newport) or in our Julus multistriatus? in fives (Fig. 10). In adult life diplopods (Julus) have a single pair of limbs on the three first segments, or those corresponding to the thoracic segments of insects, the succeeding segments having two pairs to each segment.