Page:Wood 1865 - The Myriapoda of North America.djvu/43

178, Wood, Journ. A. N. S., new series, vol. v, 1863, p. 42.

The alcohol in which the specimens were preserved having evaporated, they are in such a condition that I can only guess at the original color of the body and feet. The scuto-episcutal sutures are very distinct, as well as the subsegmental sutures of each fully-formed segment. The sterna are furnished with a median sulcus, deeply marked on the posterior, but obsolescent on the anterior portion of most of them. Length, 2¼ inches.

Hab. California.—Smithsonian Collection.

GEOPHILUS, Leach.

Segmentum cephalicum subquadratum. Segmentum prebasale haud sejuncturn, sed basali absolute coalitum, Segmenti basalis margo posticus antico multo longior. Segmentum subbasale sejuncturn. Mandibulæ modicæ, interdum denticulatæ. Antennæ capite multo longiores, subapproximatæ, articulis inæqualibus. Labium plerumque emarginatum. (Fig. 19.)

Cephalic segment subquadrate. Prebasal segment not separate, but entirely coalescent with the basal. Posterior margin of the basal segment much longer than the anterior. Subbasal segment separate. Mandibles moderate, sometimes denticulate. Antennæ much longer than the head subapproximate, their joints unequal. Labium generally emarginate.

Since Geophilus carpophagus is the type of the original genus as instituted by Dr. Leach, the name Geophilus must be used for this section, to which G. carpophagus belongs, and not for that to which Mr. Newport applies it. Mr. Gervais does not adopt any of these genera, much to my surprise, for they appear to me as clearly and even beautifully defined as almost any that I have ever seen.