8564 Arachnida. 



palish hairs. The plates of the spiracles are yellowish, and her legs 

 are also yellowish, annulated with red-brown. 



This very pretty and distinct Salticus was discovered by myself on 

 Bloxworth Heath, in the young state, in May, 1861 ; and in June, 

 1862, I met with adults of both sexes. It is an exceedingly active 

 spider, and appears to prey, among other things, on the small black 

 ants which are not rare where this spider occurs. One of those that I 

 captured had in its falces a young ant, for which it must have entered 

 the ant's burrows. Another had just made a prey of one of the spring- 

 tails (Podura). 



Family Thomisid^e. 



PlilLODROMUS DELETUS. 



Female, immature. Length 3-sixteenths of an inch. Length of 

 cephalothorax 1-tenth. Relative length of legs, 2, 1, 4, 3. 



Cephalothorax large, circular, compressed at the eyes ; clothed 

 sparingly with short yellowish hairs. Colour dull sandy yellow, 

 slightly darker on the sides. A dark yellowish brown stripe 

 occupies the medial line of the hinder half; on each side of this 

 stripe is a band of the same colour, scalloped out on either mar- 

 gin. The intervals of the scallops on the outer margin are paler 

 than the rest of the cephalothorax, and form a short series of 

 pale patches or blotches. 



Eyes black, small, of nearly uniform size, and forming a semicircle; 

 the two centre ones of the front row slightly the largest, and 

 nearer together than the two corresponding ones of the hinder 

 row. 



Legs long, of the same colour as the cephalothorax, furnished with 

 hairs and a few spines of different sizes, and scantily and irre- 

 gularly marked with dark yellow-brown blotches and spots. 

 The under sides of the tarsal and metatarsal joints are thickly 

 clothed with, strong papillaifbrm hairs, which spread outwards 

 on each side, and form quite a tuft at the articulation of these 

 two joints. The metatarsal joints of the fourth pair have but a 

 few of these hairs. 



Abdomen broader at the middle than at the extremities, rather 

 darker coloured than the cephalothorax, clothed with hair's. A 

 large fusiform band of dark yellow-brown, edged with pale yel- 

 lowish, scalloped on each outer margin, and, ending in a fine 

 point, runs down the centre to about a third of its length 



