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Show 1870.] REV. O. P. CAMBRIDGE ON NEW ARANEIDEA. 731 greater relative strength of the coxal and femoral joints of the fore legs, it shows an evident affinity to Spiders of the genus Palpimanus (Duf.), although differing from them remarkably in the contour of the cephalothorax and some other characters. I have placed the genus Stenochilus provisionally, though doubtfully, in the family Drassides. Fam. AGELENIDES. Subfam. LACHESINA* (Cambr.) Nov. gen. CYDIPPE (nom. propr.). Characters of the Genus. -Cephalothorax oval, broader behind than before ; caput full and bluff before, sloping forwards and rounding off to the clypeus, which is of considerable height. Eyes eight, small, and not differing much in size, situate on the fore slope of caput in three transverse lines (2, 2, 4). Those constituting the first two rows form nearly a square, whose foremost side is rather wider than its hinder one; the third row consists of four eyes in a very slightly curved line (the curve directed forwards) greatly exceeding the other two lines in length ; the figure thus formed by the eyes is somewhat of a X shape. Legs strong and moderately long, their relative length being 4, 3, 1, 2; between 1 and 2 there is but little difference in length ; each tarsus ends with three curved claws, of which the upper ones are the largest, and have some strong pectinations underneath towards their base. Maxillee short, strong, greatly enlarged at their base, curved, and inclined towards the labium, which is broader at its apex than at the base, its upper half being nearly semicircular. Sternum short, broad, and somewhat heart-shaped. CYDIPPE UNGUICULATA, nov. sp. (Plate XLIV. fig. 2.) Male adult, length 4| lines, length of cephalothorax 2| lines. The cephalothorax is much narrower before than behind, but has no sudden lateral compression at the caput; its colour is a dark shining chestnut-brown ; and it is clothed with a very few fine hairs and bristles, chiefly on the caput; the normal furrows and indentations are distinct though slight, that at the junction of the caput with the thoracic segments being the deepest; the profile line shows a wider depression about the middle; otherwise the surface of the cephalothorax is smooth, even, and generally rounded off. The eyes form three transverse rows about equidistant from each other ; the two foremost of these rows are short, and consist each of two eyes ; the hinder one is long and consists oifour eyes ; those of the foremost row are the largest, and the two centrals of the hinder row the smallest of the eight; the eyes of the first two rows, together with the two hind central eyes, form two nearly straight * Subfam. Lachesina comprises the genera Lachesis (Savign.), Storena (Walck.), and Cydippe (Cambr.). |