Light orange, slender, beautifully polished; cephalic segment deep orange, large, anteriorly slightly emarginate, together with the labium and mandibles copiously profoundly punctate; antennæ rather long, densely pilose; anteriorly almost pubescent; labium slightly (sometimes obsoletely) emarginate, medianly canaliculate; mandibles large, thick, sometimes indistinctly quadridentate, with a single (sometimes two) rather large tooth; feet short, very sparsely pilose, on each side (in male ?) 61, (in female ?) 63.
G. bipuncticeps, Wood, Journ. A. N. S., 1863, p. 45.
The surface of the head, under a very highly magnifying lens, has the appearance of being very densely and minutely punctate. This is very general in the family, but perhaps is a little marked in this species.
The general arrangement of the larger punctations on the cephalic segment is as follows: On each side of the posterior mesial portion there is a longitudinal series of punctations; on each side of the latter is a broad patch of the same, and anteriorly they are disposed in transverse series. No such method is discoverable in the preceding species. The color in all the specimens I have seen is somewhat lighter, and the body less robust, and perhaps more uniform than in G. hrevicornis. The labium is of the same shade as the cephalic segment, but the basilar and subbasilar are colored like the body. The dorsum has occasionally an indistinct dark median stripe. The labial sulcus is more distinct anteriorly, but is sometimes quite obsolete. The scuto-episcutal and sterno-episternal sutures are very distinct. The sterna have a median groove. I have seen an individual, belonging to the collection of the Museum of Comparative Zoology, which has 65 pairs of feet on each side, but yet in other respects agrees entirely with the others.
Hab. S. Illinois, R. Kennicott; Sonora, T. D. Graham.—Smithsonian Collection.
Genus STRIGAMIA, Gray.
Antennæ approximate. Segmentum cephalicum parvum (Fig. 20 c), breve, plerumque subtriangulare, antice
angustatum. Corpus depressum, antice attenuatum. Segmenta pedesque numerosæ.
Fig. 20
Antennæ approximate. Cephalic segment small, short, generally subtriangular, anteriorly narrowed. Body depressed, anteriorly attenuate. Segments and feet numerous.
Geophilus, Leach, partim.
Strigamia, Gray, partim.
Geophilus, Newport, et imitatores.
As I have before shown, the type of Leach's genus Geophilus belongs to the section Arthronomalus of Newport; and Arthronomalus must be replaced by Geophilus, and a new name given to Geophilus, Newport.
