1919] Wheeler — A Singular Neotropical Ant 131 



Pseudomyrma filiformis var. longiceps Forel. 



Ps. biconvexa var. longiceps Forel, Ann. Soc. Ent. Belg. 50, 1906, 

 p. 229. S. 



"Worker. A little larger than the typical form. The head 

 especially is perceptibly longer, more than 1| times as long as 

 broad, with subparallel sides. In other respects identical with the 

 typical form." 



Santa Marta, Colombia (A. Forel). 



