TRAP-DOOR SPIDERS. 253 



whicli we can say we are thoroughly acquainted, and we 

 must admit that up to the present time these ingenious 

 little architects have been at least as successful in 

 concealing themselves from the intrusion of naturalists 

 as from the attacks of their proper enemies. 



Surely these trap-door spiders, which have lain 

 quiet in the earth century after century, have hidden 

 themselves long enough from our inquisitive admira- 

 tion, and the time has now come for us to seek them 

 out and learn their ways. 



