228 MANUAL OF NATURAL HISTORY. 



I. TEIBE. HETEROGYNOUS-HYMENOPTERA (Heterogyna). 



Fore-wings not folded ; larvae social. 

 9. FAMILY. True- Ants (Formicidae). Antennae 

 elbowed ; eyes distinct ; thorax continuous, 

 more or less contracted in middle ; abdomen 

 without a sting, peduncle composed of a 

 single elevated scale. Males and females 

 with wings ; neuters wingless. Social and 

 gregarious. 



10. FAMILY. Stinging-Ants (Myrmicidae). An- 

 tennae elbowed ; eyes distinct ; thorax con- 

 tinuous, more or less contracted in middle ; 

 abdomen armed with a sting, peduncle 2- 

 jointed ; males and females with wings; neu- 

 ters wingless. Social and gregarious. 



II. FAMILY. Blind-Ants (Poneridae). Antennae 



elbowed ; eyes of neuters obsolete ; thorax 

 continuous, more or less contracted in middle ; 

 abdomen armed with a sting, peduncle formed 

 of one large scale ; males and females with 

 wings ; neuters wingless. Social and grega- 

 rious. 



12. FAMILY. Velvet- Ants (Mutillidse). Antennas 

 inserted in middle of face thorax continuous, 

 the segments soldered together ; ocelli want- 

 ing ; body clothed with hair ; abdomen armed 

 with a sting, peduncle short, simple ; legs 

 robust ; tibiae and tarsi spined and ciliated ; 

 females destitute of wings. Solitary. Males 

 and females, no neuters. 



