PLATE 6 



Enteric valve armature. Some valves are mounted whole and viewed from side or end on, 

 others slit and opened out. 



Figs i & 2, Ateuchotermes ctenopher; 3—5, Ateuchotermes spinulatus; 6-8, Ateuchotevm.es 



vetifaciens (8, some of spines enlarged to show interlocking of hooked tips to form 'network'). 



