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Show 330 REV. O. P. CAMBRIDGE ON SPIDERS [Apr. 20, others ; but this part does not in any instance approach the form of that of A. procrastinans. Both in Ceylon and Amboina Argyrodes fissifrons appears to be an abundant Spider. ARGYRODES PROCRASTINANS, sp. n. (Plate XXIX. fig. 9.) Adult female, length to the spinners If line, and to the apex of the abdomen 2\ lines. The cephalothorax of this Spider is of the ordinary form; the profile line lies pretty nearly level, though the occiput is a little gibbous and the thoracic indentation strong. Its colour is dull yellow-brown. The eyes are in usual position. The four centrals form a square, round and near the base of a very slight rounded eminence. The clypeus exceeds in height half that of the facial space, and is a little prominent. The falces, maxillee, labium, and sternum present no special characteristics, their colour being similar to that of the cephalothorax. The legs are long and slender, 1, 4, 2, 3. They are of a pale yellowish hue, the genual joints and a small portion at the extremity of the femora and tibiae of those of the three anterior pairs being of a yellow-brown colour; their armature consists of fine hairs only. The palpi are short, slender, of a darker colour than the legs, and terminate with a curved and (so far as I could determine) un-pectinated claw. The abdomen is large, and considerably produced at its posterior extremity, which is bluff and rounded. On each side, near the middle, the abdomen is somewhat enlarged, though scarcely amounting to a prominence; but halfway between that and the hinder extremity is a rather distinct rounded prominence, giving a somewhat trituberculate appearance to the end of the abdomen, and reminding one strongly of a very similar form in some exotic species of Cyclosa. The colour of the abdomen is a somewhat pale golden with a metallic lustre. Along the middle of the upperside is a broad dark black-brown ; band, which becomes faint, interrupted at the middle, and almost obsolete a little past the lateral enlargement at the middle of the abdomen. The rounded apex of the abdomen is also black-brown ; and the sides are encircled with a few spots, streaks, aud patches of a similar hue. The spinners are placed on an eminence, the hinder half of which is black-brown and the fore part dull yellow-brown. The genital process is rather large, bluff, rounded and prominent, and of a bright shining red-brown colour, deepening to black in the middle; its anterior portion covers the aperture, and is of a hood-shape. A single example of this Spider was contained in a collection kindly sent to me some years ago from Bombay by Major Julian Ilobson, of the Bombay Staff Corps. This species is nearly allied to Argyrodes inguinalis (Plate XXIX. fig. 9«'), Thor., a Spider found in Amboina, and included among the |