No. I.] A STUDY OF SOME TEXAN PONERINAE 7 



Finally I noticed in each nest a single ant with a somewhat 

 larger abdomen than that of the workers, but, like them, with- 

 out any traces of wings. Dissection of three such individuals 

 disclosed mature eggs --only a single pair in each insect, as in 

 Pachycondyla. There could be no doubt that I had found the 

 hitherto unknown female of Leptogenys. 1 They have no ocelli, 



FIG. 4. Leptogenys (Lobopelta) elongata Buck. Worker, winged male, and apterous female. 



but the shape of the node and of the abdomen serves to distin- 

 guish them at once from the workers (see Fig. 4, j). They 

 are certainly ergatoid females, but as such they differ from the 

 ergatoicl females of P, harpax in several respects : First, they 

 resemble the workers less closely ; second, they occur singly in 

 the nests ; and, third, they have the status of true queens, 



lr Thus Emery's supposition (Emery, C., " Zur Biologie der Ameisen,"2?*<7/. Cen- 

 tralbl., Bd. xi, p. 174, 1891), that the females of this genus are apterous, is proved 

 to be true of at least one species. 



