150 



W. A. SANDS 



374 



375 



Figs 356-379. Acholotermes, worker mandibles, mesenteric-proctodeal junctions showing 

 attachments of malpighian tubules and positions of malpighian knot, and views of 

 enteric valve seatings. 356-361, A. chirotus; 362-367, A. epius; 368-373, A. imbellis; 

 374-379, A. tithasus (mandibles somewhat worn). 



