1976] Holldobler, Stanton, and Engel — Exocrine Gland 
33 
Figure 1 
a) Sagittal section through the third and fourth tergite of a N. albisetosus worker. 
b) Schematic drawing of the histological section, showing the glandular cells (G), 
the glandular channels (CH), the cuticular cup structure (CU), and the intersegmental 
membrane (I) between the third and fourth segment. 
