exceptis cingulis anterioribus, fascia longitudinalis subfuscente-flava, linea puncta subfuscente-atra divisa. Pedes albido et fusco-variegati.
Longitudo 3¾ ad 4'''; latitudo ⅓.'''[1]
I. exiguus, Brandt, Recueil, p. 85.
" Gervais, Apteres, vol. iv, p. 177; Exp. Amer. du Sud (Castel.), Tabl. Myriap., p. 18.
Species mihi ignota.
I. oregonensis.
I. læte castaneus, albido-brunneo annulatus, et linea dorsale nigra et maculæ nigræ seriebus lateralibus ornatus; antennis filiform ibus, longis, pilosis, subclavatis; capitis margine antico valde emarginato, denticulato; segmentis 44—45; scutorum lateribus canaliculatis; mucrone parvo, robusto; squama preanali triangulare.
Bright chestnut, annulate with whitish brown, and ornamented with both a black dorsal line and a lateral series of black dots; antennæ filiform, long, pilose, subclavate; anterior margin of the head strongly emarginate, denticulate; segments 44—45; sides of the scuta canaliculate; mucro small, robust; preanal scale triangular.
I. oregonensis, Wood, Proc. Acad. Nat. Sci., 1864, p. 11.
Fig. 31
The color of this elegant species is a bright chestnut, ornamented with rings of a very light brown and a dorsal black line, as well as a black spot on the side of each scutum. In some individuals there is on the anterior portion of the first scutum a black crescentic blotch, and on the posterior a border of the same tint. The anterior aspect of the vertex is long and narrow and deeply emarginate inferiorly, where it is denticulate and fringed with two rows of distant hairs. The eyes are somewhat elliptical, and are connected by an illy defined black band. The posterior portion of the body is not pubescent. The outer piece of the male appendages (Fig. 31) is rather long, straight, and somewhat clavate, and distally pilose. The inner process is large, and is formed of a plate so folded longitudinally as to form a groove on the inner edge. From the base of the appendage springs a slender process, which soon bifurcates; the more slender of the divisions is the longer. They both soon enter the groove, before spoken of, the shorter and more robust being distal as to the other, and emerging from the groove on the other side of the main process, whilst the longer comes out on the same side as it enters. The female appendages are composed of a broad, thin piece, from which arise a pair of filiform, feet-like processes, besides two other very robust ones. These last are sparsely pilose, and about as long as broad. They
- ↑ This is copied from Mr. Brandt's description in Recueil, &c.
