1979] 
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Figs. 30-35. Fig. 30. Ventral view of anteroventral region of Trachymyrmex 
septentrionalis. Note simple hairs (arrow). Fig. 31. Lateral view of anteroventral 
region of T. septentrionalis. Note simple hairs (arrow). Head (h). Fig. 32. Poste¬ 
riorly pointing ventral prothoracic spinules of T. septentrionalis. Fig. 33. Ventro¬ 
lateral view of anteroventral region of Atta texana. Note prothoracic boss (large 
arrow) and metathoracic leg vestige (small arrow). Fig. 34. Ventral view of protho¬ 
racic boss of A. texana. Note posteriorly pointing spinules (s) anterior to the boss. 
Fig. 35. Lateral view of prothoracic boss of A. texana. Note posteriorly pointing 
spinules (s) anterior to the boss, and left prothoracic leg disc (1). 
