S. whitei.
S. "capite aurantiaco, corpore flavo-virente, segrænto cephalico brevi subcordato, antennis nudis, moniliformibus, labio leviter longitudinaliter cristato, utrinque obliqué sulcato, pedum paribus 74. Long. unc. 1¼."
Head orange; body yellowish green. Cephalic segment short, subcordate; antennæ bare, moniliform; labium lightly longitudinally crested; on each side obliquely sulcate; pairs of feet 74. Length, 1¼ inches.
Geophilus Whitei, Newport, Linn. Trans., xix, p. 436.
""Gervais, Apteres, iv, p. 321.
"Hab. In America Boreali."
Species mihi ignota.
G. attenuatus, Say, Journ. Acad. Nat. Sci., 1st series, vol. ii, p. 114.
I have not been able to learn anything as to what species Mr. Say referred in his description, which throws no light on the subject; possibly it belonged to the genus Mecistocephalus.
S. walkeri, sp. nov.
S. aurantiaca; capite parvo, sparse leviter punctato; mandibulis magnis, singula dente magno unico armata; scutis sine suturis; suturis sterno-episternalibus distinctis; pedibus utrinque 64; paris postremi coxis magnis, foveis minutis multis impressis.
Orange, head small, sparsely lightly punctate; mandibles large, each armed with a single large tooth; scuta without sutures; sterno-episternal sutures distinct; feet on each side 64; coxæ of the last pair large, impressed with many minute pits.
The head is small and of a more reddish tint than the body. The antenna 1 are of medium length, filiform, not at all clavate, and very sparsely minutely pilose. The body narrows much more gradually and somewhat more decidedly anteriorly than posteriorly. The last pair of legs in the single specimen are small and slender; their cox are large and pitted. Many of the sterna have three more or less obsolete depressions on their anterior portion, and two larger ones on their posterior; on some of them there is a longitudinal mesial groove. I would dedicate this species to my friend and student, Robert J. Walker, whose untiring energy in collecting has aided me so much in the preparation of this monograph.
Hab. Western Pennsylvania.—R. J. Walker.—Smithsonian Collection.
S. lævipes.
S. aurantiaca, robusta; capite modice magno, sparse piloso; segmento basilari margine antico postico nonnihil
