STNOPSIS OF NORTH AMERICAN MTRIAPODA. 233 



Fam. scolopendrid.e. 



Feet-bearing segments 21 — 23. 



Gen. Scolopendra. 



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



Antenme more than 20 articulate. 



S. hews. Brownish. Antenna? 25 articulate. Basal joint of the last pair of legs wit! i 

 5 — 7 spines on the inner surface; 7 — 10 on the lower, arranged in a threefold series. 

 Length, 6 inches. 



Var. castanelceps. Green, with the head and appendages bright reddish-chestnut. 



*S'. polymorpha. Brownish. Antennae 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. Antenna? 23 articulate. Basal joint of last pair of legs with 

 2 — 5 spines on inner surface, 7 — 12 on the lower. Length, 2h inches. 



S. Copeana. Yellowish-chestnut, sprinkled with green. Antenna? 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. 



Antemice not more than 20 articulate. 



& incequidew. Greenish. Antenna? 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. Antenna? 18 articulate. Basal joint of last pair of 

 legs longer than the tibial, with 2 — 3 spines on its inner surface. 



iS. bispinipes. Olivaceous. Antenna? 19 articulate. Basal and tibial joints of last pair 

 of legs about equal in length ; basal bispinous. 



S. longlpes. Chestnut. Antennae 17 articulate. Last pair of feet very long, with 30 

 — 50 spines apiece. Length, 5 inches. 



S. morsitans. Brownish. Antenna? 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. 



Gen. Cryptops. 



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



C. /ii/allua.'f 

 C. Mllbertll.f 



VOL. XIII. — 30 



