File:Nests types of trap-door spiders.jpg

English: Different types of nests of trap-door spiders.

a is represented the nest of a French species of Atypus, one of the Atypidae; this is included here merely for contrast;
b represents the cork type of nest; Moggridge believed that in this type the tunnel is always simple, but Atkinson ('86) describes a branched nest with a door of the cork type.

The following have the door of the wafer type as follows:
c, a single-door, un-branched wafer nest;
d, a single-door, branched wafer nest;
e, a double-door, unbranched wafer nest, and e1, the lower door of the same;

f, g, and g1, three double-door, branched wafer nests, f and g
differing in the form of the second door, shown at f1, and g2.