THE HISTORY OF MY KM ECOLOGY. 137 



Subtribe (a) Acanthostichii. 

 Acanthostichus, L'tciiupyya. 



Subtribe ( b ) Ccrapacliysii s. str. 



Cerapachys (with the subgenera Ccrapachys, Parasyscia (Fig. 125), 

 O'6cer<ea i Syscia and Cysias), Phyracaccs, Lioponcra, Sphinctomyrmex 

 (with the subgen. Sphinctomyrmex (Fig. 126) and Ensphinctus ), 

 Probolomyrmex. 



Subtribe (c) Cylindromyrmii. 



Cylindromyrmex (Fig. 127), Siinoponc. 



Subfamily II. DORVLI.\\E Shuckard. 



\Vorker with sting, sometimes vestigial. Frontal carinas vertical 

 or subvertical, closely approximated or even fused, usually leaving the 

 antennal insertions completely uncovered and curved anteriorly around 

 the antennal foveae. Clypeus usually much reduced or even fused with 

 the frontal carinse. Pedicel i- or 2-jointed. Stridulatory organ im- 



FIG. 81. \Yorker major of Pseudolasiits fantilian's of India. (Bingham.) 



perfectly developed. Female apterous, much larger than the worker 

 but like the worker blind or with vestigial eyes. Pedicel always i- 

 jointed. Male large, with i -jointed pedicel; anal segment without 

 cerci (penicilli) ; genitalia completely retractile. Pupae naked or en- 

 closed in cocoons. 



Tribe i. DORYLII. 



Paleotropical.- Worker eyeless; strongly polymorphic in Dor\lus. 

 Pedicel I 2-jointed. Antennal joints usually reduced in number. 

 Female eyeless, with gaping end to the gaster and peculiarly formed 

 hypopygium. Sting vestigial. Male with one cubital cell in wings. 

 Genitalia with very narrow lamina annularis ; subgenital plate furcate. 



Dorylns (with subgen. Dorylns (Fig. 141), Aiioinnui, Tvphlo- 

 pone, Dichihadla, Alaoponc, Rlwgmns, Shnckardia}, 

 tus (Fig. 143). 



