xv ATTIDAE 421 
seen hunting on walls and fences during the summer. Jarpissa 
muscosé is the largest English species, measuring about half an 
inch. It has a brownish-yellow coloration, and is found, though 
not commonly, in similar situations. Attus pubescens affects grey 
stone walls, on which it is nearly invisible except when moving. 
The other British species are mostly to be found on trees and 
shrubs or among herbage, or hunting over bare sandy spots in 
the sunshine. <A few (M/arpissa pomatia, Hyctia nivoyi) are fen 
species. Hasarius falcatus is a handsome spider, common in 
woods in some localities. 
The species differ much in their jumping powers; the Mar- 
pissas, for example, are not great leapers, but the little Attus 
saltator, found on sandhills, jumps like a flea, and the North 
American species Saitis pulex has a suggestive specific name. 
Again, in this family there are mimetic forms resembling 
ants. Myrmarachne formicaria (Salticus formicarius) is found 
very rarely in England, but is not uncommon on the Continent. 
Synageles and Synemosyna are allied genera. Phidippus is a 
genus well represented in America, and Ph. morsitans has already 
been mentioned (p. 365) in connexion with its poisonous re- 
putation. Astia and Jciuws have American representatives (see 
pp. 381, 382), though the type species belongs to the Old World. 
