tops postica (C. postica. Say), except as to the eyes and teeth. Is it possible that Mr. Newport is mistaken as to the possession of eyes? Say certainly did not see them. Length 1¾ inches.
Hab. North Carolina.—Dr. Wm. Stimpson.—Smithsonian Collection.
O. spinicauda.
O. aurantiaca; capite polito, punctata; segmento basali depressione magna triangulari mediana; antennis 17 articulatis, antice pubescentibus; laminis dentalibus, labio mandibulisque subprofunde punctatis, margine antico rotundato; denticulis labialibus 4, parvis, arete coadunatis, indistinctissimis; labio medio antice subcarinato; scuto postremo maximo, subprofunde punctato, alteris fere bis majore, lateribus rotundatis, marginibus lateralibus valde elevatis; pedibus postremis robustis, supra complanatis, intus complanatis et rude punctatis, articulo basali tibiali fere sequali; femore, tibia, tarsisque margine interiore superiore acuto et serrulato, femore tibiaque margine interiore inferiore quoque acuto et serrulato; processu angulari parvo, spina unica robusta acuta; appendicibus analibus lateralibus angustis, postice truncatis, dense profunde punctatis, singula spina unica apicali minutissima; squama preanali elongata, subprofunde punctata, media leviter canaliculata. (Figs. 8, 9, 10, 11.)
| Fig. 10 Fig. 11 |
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Orange; head polished, punctate; basal segment with a large median triangular depression; antennæ 16 articulate, distally pubescent; dental lamina, with the labium and mandibles subprofoundly punctate, anterior margin rounded; labial denticules 4, small, closely coadnate, very indistinct; labium medianly anteriorly subcarinate; last scutum very large, subprofoundly punctate, almost twice as large as the others, with its sides rounded, its lateral margins very much elevated; last pair of feet robust, above complanate, within complanate and rudely punctate; basal and tibial joints about equal; interior superior margin of the femur, tibia and tarsi acute and serrulate; the interior inferior margin of the femur and tibia also acute and serrulate; angular process small, with a single acute robust spine; lateral anal appendages narrow, posteriorly truncate, densely profoundly punctate, each with a very minute apical spine; preanal scale elongate, subprofoundly punctate, medianly lightly canaliculate.
O. spinicauda, Wood, Journ. A. N. S., new series, vol. v, 1863, p. 36.
The color varies greatly in depth of shade, but the two ends are almost always darker than the intermediate portion of the body; the feet, with the exception of the last pair, are generally lighter. The cephalic segment is slightly emarginate in front. The suture between the true basilar segment and the prebasilar fold is very deep; it is formed by two lines rapidly divergent from the centre, and at the central portion there is quite a large triangular depression. In some specimens the scuto-episcutal sutures are well-marked. The posterior borders of the scuta are straight. The terminal scutum is nearly twice as large
