P. floridus (Var. ?).
P. atro-castaneus; scutis postice rubro-aurantiaco marginatis; laminis lateralibus parvis, læte rubro-aurantiacis; appendicibus masculis P. placidi illis similibus.
Blackish-chestnut; scuto posteriorly marginate with reddish orange; lateral laminæ small, bright reddish orange; male appendages like those of P. placidus.
P. floridus (Var. ?), Wood, Proc. Acad. Nat. Sci., 1864, p. 9.
The head is lighter colored than the body. It is medianly canaliculate, with a pair of punctations on each side of its vertex. Its inferior border is broadly emarginate. The antennæ are rather long and slender, very slightly clavate, light-brown, and distally tipped with black. The scuta are smooth, beautifully polished, and not corrugate. The side plates are distant, quite small, and nearly horizontal, with their anterior angles rounded. The anal scutum is prolonged, and is sometimes wholly, sometimes partially, orange. It is triangular, with its truncate, decurvate, slightly emarginate apex projecting much beyond the anal scales. The feet are cylindrical, yellow, and somewhat pilose. The male appendages resemble those of P. placidus, except in color. They are yellowish. Those of the female consist of a pair of short, blunt processes. Each of these has a basal portion into which is set a short, somewhat flattened body, with an obscure linear opening traversing its distal surface. From the junction of these two parts springs a heavy fringe of long, coarse hair. P. floridus is very possibly a distinct species from P. placidus. I have seen but a single individual of the latter. The general appearance of the two is so dissimilar as to incline me to the belief of their distinctness; but they agree well as to their genitalia, and a suite of specimens might show their identity. Length, 1¼ inches.
Hab. Michigan.— Prof. Miles.
P. Haydenianus.
P. olivaceo-castaneus; antennis modicis, sparse pilosis, ultimis nigris; laminis lateralibus Iuteis; appendicibus inasculis hirsutis et processu lato breve et spinis duabus armatis; spina terminale (Fig. 57), modice robusta, valde curvata.
Olive-chestnut; antennæ moderate, sparsely pilose, distally black; lateral laminæ yellowish; male appendages hirsute, armed with a broad, short process and two spines; terminal spine moderately robust, strongly curved.
P. Haydenianus, Wood, Proc. Acad. Nat. Sci., 1864, p. 10.
Fig. 57
Judging from an alcoholic specimen, the color of this animal is an olive-chestnut, with the side plates yellowish, and the posterior portions of the scuta much lighter than the
