1922] Ants of the Genus Formica in the Tropics 177 



1913. Forel, A. H. Sauter's Formosa Ausbeute. FormicidiE 

 IL Arch. Naturgesch. 79, 1913, pp. 183-202. 



1913. Wheeler, W. M. A Revision of the Ants of the Genus 

 Formica (Linne) Mayr. Bull. Mus. Comp. Zool. 53, 

 1912, pp. 379-565. 10 maps. 



1914. Wheeler, W. M. The Ants of the Baltic Amber. Schrift. 

 physik. okon. Gesell. Konigsberg 55, 1914, pp. 1-140, 

 66 figs. 



1917. Wheeler, W. M. The Ants of Alaska. Bull. Mus. Comp. 

 Zool. 61, 1917, pp. 15-22. 



