92 ARACHNOIDEA. 



CASE form, the cephalo-thorax being massive, truncated in front with 

 parallel sides, and large in proportion to the abdomen. Mr. 

 Blackwall keeps the whole of the family in one genus, but other 

 authors have sub-divided it into several genera, of which it will be 

 sufficient to notice the more remarkable. 



No. 20. Epiblemum scenicum [Clark], Salticus scenicus, BL — 20. Enlarged figure. 



This is the type of the family. A grey 

 species with transverse oblique whitish 

 bars on the back and legs, very common. 

 When it springs upon its victims, it, by 

 the act of leaping, draws from the spinners 

 a line attached by its extremity to the 

 station whence it took its spring ; an ar- 

 rangement which has been supposed to be 

 ^ ., , a precaution against falHng should it miss 



Epiblemum scenicum ■'• o o 



(raagnilied twice). 



Its ann. 



No. 21. Heliophanes cupreus {Walck.), Salticus cupreus, Bl.—^l. Enlarged 

 figure. 



Easily distinguished by its colouring and markings. The 

 cephalo-thorax is dark brown and green with white markings 

 behind ; the abdomen dark green with a white margin in front, 

 and four short transverse white lines on the back. Not common j 

 found in Wales. 



No. 22 Ballus depressus {Walck.), Salticus obscurus, BL—22. Enlarged figure. 

 A minute dark brown species ; very scarce. 



No. 23. Salticus formicarius (Za/r.).— 23. Enlarged figure. 



Also very rare. It is remarkable from its great resemblance to 

 an ant ; a character possessed by several exotic species. 



