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 httle 

 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 httle 

 prominent. 



Tlie falces, maxillcB, labium, and sternum present no special 

 characteristics, their colour being similar to that of the cephalo- 

 thoras. 



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 amount- 

 in" to a prominence ; but halfway between that and the hinder ex- 

 tremity is a rather distinct rounded prominence, giving a somewhat 

 trituberculate appearance <^r> 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 httle 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, and 

 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 (PMe XXIX. 

 fig. 9a'), Thor., a Spider found in Amboina, and included among the 



