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Show 1875.] NEW SPECIES OF ERIGONE. 193 The eyes are on black spots disposed in the usual four pairs, and forming an area rather broader than long; they are of moderate size and, relatively, do not differ to any very great extent; those of the hinder pair are separated from each other by rather less than two diameters ; those of each lateral pair are contiguous to each other and are seated on a slight tubercle, the hind lateral eye being rather more than a diameter's distance from the eye nearest to it of the hinder pair; the fore laterals are the largest of the eight, and each is rather more than a diameter's distance from the eye nearest to it of the foremost pair ; the eyes of this last pair are smallest of the eight, dark-coloured, but not quite contiguous to each other; the rest are pearly white. The legs are moderate in length and strength ; their relative length appeared to be 4, 1, 2, 3; there is, however, but little difference between those of the first and fourth pairs; they are furnished with hairs and a few erect and slender bristles on their uppersides. The palpi are short but tolerably strong: the cubital joint is short, bent downwards, and slightly clavate at its fore extremity; the radial joint is short but is produced (on its whole width) at the upper extremity into a large and widening apophysis, which curves round in an inward direction and has its fore half bifid, the two limbs pointing outward; the inner limb is the slenderest, dark-coloured,blunt-pointed, curved, and somewhat cylindrical in form; the outer limb is stronger than the other, and goes off at its extremity into a fine and slightly curved point; this apophysis covers the greater part of the digital joint, which is small but of ordinary oval form : the palpal organs are prominent but not very complex; from their extremity, rather on the outer side, issues a long, dark brown, filiform, sharp-pointed spine, which bends round sharply upwards and backwards, continuing in that direction in a large but somewhat irregular coil, the point being directed inwards, near the extremity of the palpal organs and not far from the origin of the spine ; another short, black, filiform spine runs close over the base of the palpal organs in a transverse direction, but it was difficult to see either its point of origin or its termination. The falces are moderate in length and strength, rather directed backwards and armed with teeth towards their extremities on the inner side. The maxilla, labium, and sternum are normal in form, the last being slightly suffused with dusky brown. The abdomen is short, oval, very convex above, and projects strongly over the base of the cephalothorax ; it is jet-black in colour, glossy, and clothed very sparingly with short hairs. An adult male of this very distinct species was received from M. Simon, by whom it was found in Corsica. ERIGONE TRUNCATIFRONS, sp. n. (Plate XXVII. fig. 4.) Adult male, length f line. The whole of the fore part of this Spider is of a bright yellow colour, the upper part of the cephalothorax, as well as the femora and tibiae of the legs, being tinged with orange. The caput is broad, a little PROC. ZOOL. Soc-1875, No. XIII. 13 |