10-2 



Guide to Arachnida. 



Table-case Of the British jumping spiders, Einble^num sceniciim, a species 

 No. 23. which Hves in the crevices of walls, is the most frequently met 

 with. It is often to he seen wandering about in the sunshine in 

 search of prey. 



It is to this family that the majority of the ant-like spiders 

 belong. In the principal genus Myrmarachne there are more than 

 eighty species, which are distributed over the temperate and 

 warmer regions of the world. They often mimic particular 



species of ants, 

 resembling them 

 closely in form and 

 colour ; their gait 

 also is very ant-like, 

 and they habitually 

 run in the zigzag 

 fashion of an ant 

 pursuing its prey. To 

 complete the decep- 

 tion, the legs of the 

 first or second pairs 

 in some species are 

 held up in the air 

 so as to simulate 

 the antennae of the 

 insect. The family 

 is cosmopolitan in 

 distribution. 



Order 5. 



Solifugae (False 

 Spiders). 



Fig. 66. 



Jumping Spider, Epiblcmmn scoiicum, X 8. 

 (After Blackwall.) 



No. 24. 



Tlio Solifugae have 



some superficial re- 



seml)lance to the 



Table-case spiders, but may be easily distinguished from them by their having 



lioth the cephalothorax and the alidomen distinctly segmented and 



by the absence of spinning mammillae. The "cephalothorax'" 



(prosoma) is covered by three plates. The front one of these, 



which represents the terga of the first four somites, is of large 



size and bears a pair of median eyes and obsolete lateral eyes. 



The ventral surface of the fourtli cephalothoracic somite bears a 



