382 
Psyche 
[December 
Figs. 13-17. Fig. 13. Ventral view of Pseudomvrmex paUidus showing food in 
trophothylax (arrow). Fig. 14. High magnification of food in trophothylax of P. 
pallidus. Note anteriorly pointing spinules on 2nd abdominal segment (A2). Head 
(h). Fig. 15. Posteriorly pointing metathoracic spinules in trophothylax of Pseudo¬ 
mvrmex gracilis mexicanus. Fig. 16. Section through trophothylax of P. g. mexica- 
nus. Note buccal cavity (b), and segments: prothorax (Tl); mesothorax (T2); 
metathorax (T3); 1st abdominal (Al) and 2nd abdominal (A2). Fig. 17. Lateral 
view of extruded trophothylax of P. g. mexicanus. Note rows of spinules on meta¬ 
thorax (arrow). Head (h). 
