SYNOPSIS OF NORTH AMERICAN MYRIAPODA.
Class Myriapoda.
Ord. CHILOPODA.
Segments of the body provided with a single pair of feet.
Sub Ord. SCHIZOTARSIA.
Tarsi composed of a very great number of small joints.
Fam. CERMATIIDÆ.
Gen. Cermatia.
C. forceps.
Sub Ord. HOLOTARSIA. Tarsi composed of but few joints.
Fam. LITHOBIIDÆ.
Dorsal scuta 15, two sets; a smaller scutum alternating with a larger.
Gen. Lithobius.
Excavations on the posterior coxae large, ovate, arranged in a single series upon a depressed face.
L. Americanus. Scuta smooth, not rugose. Labial denticules about 10.
L. planus.†[1] Scuta rugose. Labial denticules about 14.
L. paucidens. Labial denticules about 4.
Gen. BOTHROPOLYS.
Excavations on the posterior coxae small, almost round; arranged in a three or four-fold series on a scarcely depressed face.
B. multidentatus. Ocelli on each side from 32 — 37.
B. Xanti. Ocelli on each side 18. Surface of the scuta very roughly rugose.
B. bipunctatus. Ocelli on each side 18. Surface of the scuta but slightly roughened.
- ↑ Species marked with a cross have never been identified by the author.
