Page:Wood 1865 - The Myriapoda of North America.djvu/98

Rh SCOLOPENDRIDÆ: Feet-bearing segments 21—23.

. Cephalic segment imbricate. Pairs of feet 21. Eyes 4 on each side.

Antennæ more than 20 articulate.

S. heros. Brownish. Antennæ 25 articulate. Basal joint of the last pair of legs with 5—7 spines on the inner surface; 7—10 on the lower, arranged in a threefold series. Length, 6 inches. ''Var. castaneiceps''. Green, with the head and appendages bright reddish-chestnut. S. polymorpha. Brownish. Antennæ 30 articulate. Basal joint of last pair of legs with 3—7 spines on inner surface; 10—18 on the lower, arranged in a fourfold series. Length, 4 inches. S. viridis. Greenish. Antennæ 23 articulate. Basal joint of last pair of legs with 2—5 spines on inner surface, 7—12 on the lower. Length, 2½ inches. S. Copeana. Yellowish-chestnut, sprinkled with green. Antennæ 25 articulate. Basal joint of last pair of feet very slightly longer than the tibial, with 4—6 spines on the inner surface, 9—17 on the lower. Length, 4 inches.

Antennæ not more than 20 articulate.

S. inæquidens. Greenish. Antennæ 17 articulate. Basal joint of last pair of legs with 3—8 spines on the inner surface, 7—10 on the lower. Length, 4 inches. S. byssina. Greenish or brownish. Antennæ 18 articulate. Basal joint of last pair of legs longer than the tibial, with 2—3 spines on its inner surface. S. bispinipes. Olivaceous. Antennæ 19 articulate. Basal and tibial joints of last pair of legs about equal in length; basal bispinous. S. longipes. Chestnut. Antennæ 17 articulate. Last pair of feet very long, with 30 — 50 spines apiece. Length, 5 inches. S. morsitans. Brownish. Antennæ 20 articulate. Basal joint of last pair of legs with its superior margins strongly elevated; inner surface with 5 spines; lower 7—9, arranged in a threefold, alternating series.

. Feet-bearing segments 21. Eyes none. Last scutum as in Scolopendra.

C. hyalina.† C. Milbertii.†