There are also species called "funnel-web spiders" that belong to the second group mentioned above. So they are not close relatives of Atrax, and they are not dangerous. They just have a similar way of making a funnel-shaped web that leads down to some kind of shelter where the spider hides in wait for some insect to eat. Atrax is a very large and very aggressive spider, and these other spiders are from small to medium size and are extremely timid.