AKRANGEMENT OF A NEST. 



43 



Fig. 2. 



Ground-plan of a typical nest of Lasitts niger, reduced, a, 

 narrow doorway ; h, hall ; o, vestibule ; d, main chamber ; e, inner 

 sanctum ; /, /, f, f. narrow entrance passages to sanctum , <j, (j, spe- 

 cial pillai's. 



