EXPLANATION OF PLATE XX. 



Fig. 26. Auame uebulosa, Raiub. and Pull., entrance to nest. 



,, 27. ,, ,, ,, ,, longitudinal section of nest : 



a upper part, b ball of earth 

 in position, c spider. 



,, 28. ,, ,, ,, ,, longitudinal section of nest : 



a cuff open, b ball of eartli, 

 c spider. 



