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Show 1874.] REV. O. P. CAMBRIDGE ON NEW DRASSIDES. 379 The eyes are in the usual two transverse rows, the front row being considerably shorter than the hinder one and slightly curved, the hinder one being straight; the hind central pair are smaller than the hind laterals, and nearer to each other than each is to that of the latter nearest to it; the fore centrals are largest of the eight, and are further from each other than each is from the fore lateral on its side, each fore lateral being in fact nearly, if not quite, contiguous to the fore central next to it. The height of the clypeus is less than half that of the facial space. The legs are moderately long, their relative length being 4, 1, 2, 3. The femora, gemmae, and tibiae are more than usually strong ; they are well furnished with hairs; and the tibiae and metatarsi of the third and fourth pairs have some strongish spines ; there are also some spines beneath the metatarsi of the first and second pairs, together with numerous papilliform hairs beneath all the tarsi and metatarsi, except perhaps the metatarsi of the fourth pair, which appear to be without them. The maxilla are rather stronger than usual, but of normal form. The palpi issue from, as nearly as possible, the middle point towards their extremities, which are of a pale yellowish colour. The labium is of a broad oblong form, slightly rounded at the apex. The sternum is similar in colour to the cephalothorax, and seems to be more convex than usual, the central portion, however, being quite flat. The abdomen is black, hairy, of an oblong-oval form, projecting a little over the base of the cephalothorax; the underside of the fore part furnished with strong upturned bristly hairs. The plates of the spiracles are pale yellow-brown, and the genital aperture margined with deep brownish red. The spinners are short; those of the inferior pair strong and longest, those of the superior pair being only just discernible. A single adult female was found by myself under a stone near Ischl (Upper Austria) in the summer of 1865. PROSTHESIMA CURINA, sp. n. Adult male, length 2\ lines. The cephalothorax of this species differs from the majority of the species of this genus in being broader and more truncate before; and the profile line, instead of having its highest point at the thoracic junction and falling gradually in a slightly curving line to the eyes, presents a uniform curve, the highest point being at the occiput; it is of a deep rich reddish-brown colour, sparingly clothed with a few fine palish hairs ; the normal grooves and indentations are very slightly marked, and the lateral constrictions at the caput are barely visible. The clypeus is equal to half the facial space. The eyes are in two transverse, straight, parallel rows, forming an oblong figure, whose length is more than double its width ; the hinder row is longest, and its two central eyes are smallest of the eight and round, the interval separating them being equal to very 25* |