10 
Psyche 
[March 
Gigantiops and the Congolese Santschiella than of Geso- 
myrmex. The other ant is Prodimorphomyrmex primigenius 
which I described from the Baltic amber. It approaches 
Gesomyrmex much more closely, but has smaller eyes, 10- 
jointed antennas and a shorter thorax. Only a single imper- 
fect specimen was observed. 
The following would now be the corrected synonymy of 
the known species of the genera I have been considering : 
Living Species 
Gesomyrmex chaperi Ern. Andre. Borneo, Sumatra. 
Gesomyrmex chaperi Ern. Andre, Mem. Soc. Zool. France 5, 
1892 p. 47, Figs. 1-3, worker minima ; Emery, Gen. Insect. 
Formicinae 1925, p. 47, PL 2 Fig. 3, worker media. 
Dimorphomyrmex janeti Ern. Andre, Mem. Soc. Zool. France 5, 
p. 51 Figs. 4 and 5 ; worker maxima and media. ; Emery, 
Ann. Soc. Ent. Belg. 43, 1894, p. 494, worker maxima.; 
Emery, Gen. Insect. Formicinae 1925, p. 47, worker 
maxima and media. 
Gesomyrmex luzonensis (Wheeler). Philippines. 
Dimorphomyrmex luzonensis Wheeler, Proc. New England Zool. 
Club. 6, 1916 p. 16, Fig. 4, female; Emery, Gen. Insect. 
Formicinae 1925, p. 47, female. 
Gesomyrmex howardi Wheeler. China. 
Gesomyrmex howardi Wheeler, Psyche 28, 1921 Fig. 2, worker 
media and minima ; Emery, Gen. Insect. Formicinae 
1925, p. 47, worker media and minima. 
Gesomyrmex kalshoveni Wheeler. Java. 
Described above p. 2 from the maxima, media and minima 
worker and male semipupa. 
