Testaceous; cephalic segment subovate, minutely punctate; antennæ 25 articulate; mandibular teeth produced, slender; labial teeth 8—10, the inmost two on each side generally coadnate; feet generally yellowish; basal joint of the last pair within with 5—7 spines, beneath 7—10 arranged in a threefold series, angular process with 3—10 spines; lateral anal appendages elongate, minutely profoundly punctate, with 5—7 apical, and a marginal spine on each.
S. heros, Girard, Marcy's Report of Explorations on the Red River, p. 272, pi. xviii.
"" Wood, Journ. A. N. S., new series, vol. v, 1863, p. 18.
Var. castaneiceps.
S. viridis; capite antennisque rubro-castaneis; pedibus plerumque luteolis, interdum viridibus; paris postremi articulis basalibus saturate viridibus.
Green; head and antennæ reddish chestnut; feet generally yellowish, sometimes green; basal joints of last pair very deep green.
S. castaneiceps, Wood, Proc. A. N. S., 1861, p. 11; Journ. A. N. S., new series, 1863, vol. v, p. 18.
The prebasilar fold is connate with the basilar segment, the suture is generally, however, well marked, existing as a deep groove. The cephalic segment is slightly emarginate between the antennæ. The labial teeth vary from 8—10 in number; there will sometimes be four on one side and five on the other, the external tooth apparently being the missing one. The antennæ are 25-jointed. Out of nearly a hundred specimens that I have examined, only two or three had one or two supernumerary joints developed. The scuta are polished, generally minutely and sparsely punctate, often obscurely bicarinate, the posterior with their lateral margins elevated. The last pair of legs are rather robust, with the basal joint longer than the tibial. The scuto-episcutal sutures are apparent, the sterno-episternal very well marked. Length 5½ inches.
Hab. Georgia, Alabama, Louisiana, Texas, New Mexico, &c.
