5^8 REV. O. P. CAMBRIDGE ON EGYPTIAN SPIDERS. [June 20, 



not quite contiguous to each other, each fore lateral eye being also 

 equally close to the hind central eye on its side, and each hind lateral 

 eye still closer (almost contiguous) to the hind central nearest to 

 it ; the interval between those of the front row (or the fore laterals) 

 is about equal to their longest diameter ; the height of the clypeus, 

 which projects a little at its lower margin, is rather less than half 

 that of the facial space. 



The legs are moderately long and strong, of a lightish orange- 

 yellow colour; and their relative length appeared to be 4, 1, 2, 3 ; 

 tbe femora are the strongest, especially at their posterior extremities, 

 which are abruptly enlarged on the upperside close to the arti- 

 culation, but run evenly thence to the anterior extremities ; they 

 are furnished, but not very thickly, with hairs ; the tibiae and meta- 

 tarsi of the first and second pairs are armed beneath with a double 

 series of long and strong sessile spines ; the other two pairs of legs 

 have bristles (or very slender spines) in a similar situation ; each 

 tarsus terminates with two curved claws springing from a distinct 

 supernumerary claw- (or heel) joint. 



The palpi are short and not very strong ; their colour is yellow, 

 paler than that of the legs ; and they are furnished with hairs and 

 bristles ; the cubital and radial joints are short, the former is bent 

 downwards, the latter is rather the longest and strongest ; the digital 

 joint is narrow, tapering from the middle to the fore extremity, and 

 no broader than, but almost double as long as, the radial; the palpal 

 organs consist of a very large and prominent oval yellowish lobe 

 with a largish curved, pale brownish yellow, pointed process at its 

 anterior extremity. 



The fakes are moderately long, but not very strong, directed 

 backwards towards the labium, furnished in front with bristly hairs, 

 and similar in colour to the cephalothorax. 



The mcurlUcE and labium are of normal form, the latter being 

 rather large ; these parts, with the sternum, are simifar to the legs 

 in colour. 



The abdomen is of an oval form, moderately convex above, and 

 covered both above and below (like O. punctatus Cambr., and 

 O. loricatus, Sim.) with a bright reddish yellow-brown somewhat 

 corneous scutum, the approximate edges, according as they are 

 more or less separated, showing a greater or less interval of pale 

 yellowish membranous integument. It appears, from observations 

 made by M. Simon, "Araneides nouv. ou peu connus du midi de 

 l'Europe," Mem. Liege, 2 e ser. t. v. p. (sep. cop.) 45, that the 

 Spider he describes has the power to bring the edges of this supra- 

 abdominal and subabdominal scutum together, or to separate them, 

 at will ; the spiracular plates are continuous with each other, and, 

 extending forwards, cover the pedicle by which the abdomen is 

 connected with the cephalothorax ; this pedicle is longer and more 

 distinctly developed than in most other Spiders; the upper scutum 

 is very highly polished and glossy, and it is thinly but evenly 

 covered with minute tubercles, each of which supports a fine bristly 

 hair : the spinners are short and inconspicuous ; they are enclosed 



