OF WASHINGTON. 21 



13. Culex bisulcatus Coq. 



14. Culex conservator D. & K. 

 15- Wyeomyia grayii Theob. 



16. Sabethoides undosus Coq. 



17. Wyeomyia ulocoma Th'eob. 



18. Trichoprosopon nivipes Theob. 



19. Aedes insolita Coq. 



20. Aedes knabi Coq. 



21. CM/*?* mutator D. & K. 



22. Mochlostyrax urichii Coq. 



23. Aedes albonotata Coq. 



24. Wyeomyia asullepta Theob. 



The following papers by members of the Society have been 

 accepted by the publication committee : 



CLASSIFICATION OF THE FORAGING AND DRIVER 

 ANTS, OR FAMILY DORYLID^E, WITH A DE 

 SCRIPTION OF THE GENUS 

 CTENOPYGA ASHM. 



By WILLIAM H. ASHMEAD, M.A., D.Sc. 



In the Canadian Entomologist for November, 1905, pages 

 381 to 384, I gave a skeleton of a new arrangement of the 

 families, subfamilies, tribes, and genera of the Ants, or the 

 superfamily Formicoidea in which several new genera were 

 indicated. Among these was the genus Ctenopyga, from 

 Mexico, which I now describe and figure, after giving analyt 

 ical tables for recognizing the three subfamilies, the tribes, 

 and the genera falling in each, according to the three sexes, 

 worker, female, and male, when known, taken from my forth 

 coming classification of the Ants, or the superfamily Formi 

 coidea. 



Family XLIIL DORYLID^. 



The ants belonging to this family are held together and 

 easily separated from those of other families by habits and by 

 peculiarities of structure, the females being nearly always wing 

 less, the workers having the antennae inserted much farther 

 forward on the head, close to the anterior margin, and by 

 the genitalia of the males which differ widely from those of 

 other ants, the terminal ventral plate, or the hypopygium, being 

 broad and deeply semicircularly emarginated, forked or 

 bispined. 



