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Show 622 REV. O. P. CAMBRIDGE ON ARACHNIDA. [Julie 20, and slightly divergent at their extremities; they are of a dull yellow- brown colour. The legs are rather short, moderately strong, and their relative length appears to be 4, 1, 2, 3, there being very little, if any, difference between those of the second and third pairs; they are of a brownish-yellow colour striped with longitudinal lines of black, and silvery shining white hairs, and are armed with a few inconspicuous spines. The abdomen is of a short oval form ; two-thirds of the upper-side forwards are of a bright scarlet, marked conspicuously in front and on the sides by a broad irregular margin of dove-coloured grey tinged with olive-green ; two large somewhat oval patches of the same colour occupy the centre of the scarlet portion, and are connected with the front border by a narrow line or neck of a similar hue ; this pattern is edged narrowly with black ; the hinder extremity of the abdomen is black, divided from the scarlet fore part by a broad, shining, silvery-white transverse band, which is also divided from the scarlet by a slender black line. The spinners are prominent, of a dull white colour, with a broad black transverse band in the middle of the superior pair ; the underside of the abdomen is of a silvery shining white colour, reflecting rich metallic tints in a strong light, and margined behind with black ; all the above colours on the abdomen are formed by a short close-set covering of hairs or pubescence. A single adult female of this beautiful Salticus was contained in the collection under consideration, and was found at Labuan; it is, I believe, new to science; and it gives me great pleasure to connect with it the name of Dr. Collingwood, who has enabled me to give the above report on the Spiders collected by him. DESCRIPTION OF PLATE XLIX. Fig. 1. Nephila rivulata (Cambr.), p. 618. a. Female, natural size. b. Spider in profile, without legs. c. Underside. 2. Nephila rivulata, p. 618. a. Male, natural size. b. Palpus of male, magnified. 3. Nephila chrysogaster (Walck.), p. 620. a. Male, natural size. b. Palpus of male, magnified. 4. Nephila chrysogaster, p. 620. Female, natural size. 5. Salticus collinywoodii (Cambr.), p. 621. a. Female, magnified. h. Profile, without legs. c. Cephalothorax, from above. (/. Natural size. |