THE DRIVER A\D LEGIONARY ANTS. 



247 



the tribes Leptanillii, Cerapachysii, Proceratii and Acanthostichii. I 

 have followed Forel in including the last three tribes among the 

 Ponerinse, while admitting that they have close and important genetic 



FIG. 141. Castes of Dorylus helvolus drawn under same magnification. (Emery.) 

 A, Female (dichthadiigyne) in dorsal view ; B, profile view of same ; a, vestige of 

 eye ; b and c, vestiges of wings ; d. metathoracic stigma ; C, worker major ; D, worker 

 minima ; E, male ; F, tip of gaster of female in profile ; G, tip of gaster of female 

 D, furcatus in dorsal view ; H, same in profile. 



