as any of the others, deeply punctate, and without a sulcus or any traces of the sutures. The last pair of legs are dark in color, short and very robust; their basilar joint is often furnished with one or two small spines, besides the terminal, on either the inferior or superior internal margin. They present the peculiar crossing of the nails found in the other species. The other legs are somewhat compressed. Length, 2¼ inches.
Hab. South Illinois, West Pennsylvania. Smithsonian Collection.
Gen. 6. THEATOPS, Newp.[1]
"Ocelli distincti. Antennæ breves, subulatæ, 17—articulatæ. Segmentum cephalicum truncatum subimbricatum; inargine labiali denticulato. Pedum postremorum articulus magnus, obconicus, abbreviatus. Pedum paria 21. Appendices anales laterales obtusse."
Eyes distinct. Antennæ short, subulate, 17 articulate. Segments cephalic, truncate, subimbricate; labial margin denticulate. Joint of the last feet large, obconical, abbreviated. Pairs of feet 21. Lateral anal appendages obtuse.
T. postica.
"T. aurantiaca, ocellis inconspicuis lateralibus, dentibus 8 minutis, segmento postremo maximo elongato quadrato lateribus rotundato medio profunde sulcato margine posteriore transverso, pedibus postremis brevibus crassis rotundatis attenuatis; articulo basali brevissimo. Long. unc. 8-10."
Orange, ocelli lateral not conspicuous; teeth 8 minute; last segment very large, elongate, quadrate, with its sides rounded medianly; profoundly sulcate, with its posterior margin transverse; last feet short, thick, rounded attenuate; basal joint very short. Length, 8-10 inches.
Crypt. postica, Say, Journ. A. N. S., Philada., ii, p. 112; Œuvr. Entom. i, p. 24; Gervais, Ann. Sci. Nat. Janv., 1837, p. 51, sp. 5; Apt. iv, p. 294.
" Lucas, Hist. Nat. Anim. Artie, p. 547, sp. 5.
" Newport, Ann. Mag. Nat. Hist., xiii, p. 110.
Theatops postica, Newport, Linn, Trans., xix, p. 410; Oatal. British Mus. (Myriap.), p. 61.
" Wood, Journ. A. N. S., new series, vol. v, 1863, p. 37.
"Hab. In Georgia, Floridaque Orientali."
"The mandibles are short, thick, and have a distinct basal tooth; the dental plates are elongated and widely separated; the teeth 8, minute but distinct. The basal joint of the posterior pair of legs much shorter than the second, which is twice as long as the succeeding joints. The lateral anal appendages deeply punctured. Preanal scale flat, with a median longitudinal sulcus and scattered punctures, with the margin straight."
I have never seen a specimen of this species.
- ↑ Linn. Trans., xix, p. 410.
