No. 8. — Ants collected in Trinidad by Professor Roland Thaxter, Mr. 



F. W. JJrich, and Others. 



contributions from the entomological laboratory of the 

 bussey institution. harvard university. no. 108. 



By William Morton Wheeler, 

 formicidae. 



1. Ectatomma tuberculatum Olivier. ^ 9- — Port of Spain and 

 Sangre Grande (Thaxter). 



2. Ectatomma ruidum Roger. ^. — Port of Spain (Thaxter); 

 Chaguanas (Urich). 



3. Neoponera obscuricornis Emery var. latreillei Forel. S . — Caura 

 (Urich). 



4. Neoponera unidentata Mayr. ^ . — Port of Spain (Thaxter). 



5. Pachycondyla crassinoda Latreille. S 9 . — Port of Spain 

 (Thaxter). 



6. Pachycondyla harpax Fabricius. y . — Port of Spain (Thaxter). 



7. Pachycondyla iinpressa Roger. ^. — Port of Spain (Thaxter). 



8. Euponera (Mesoponera) cojistricta Mayr. ^ 9 . — Port of Spain 

 ' (Thaxter). 



9. Euponera ( Trachymesopu^) stigma Fabricius. ^ 9 . — Port of 

 Spain (Thaxter). 



10. Ponera opaciceps Mayr. ^ . — Aripa Savanna (Thaxter). 



11. OdontomachtLS haematoda Linne. ^ 9. — Port of Spain, Gas- 

 paree Island, and Sangre Grande (Thaxter). 



12. Odontomachus haematoda Linne subsp. insularis Guerin var. 

 hirsutiusculu^ F. Smith, y . — Port of Spain (Thaxter). 



13. Odontomachus haematoda Linne subsp. meinerti Forel. ^ . — 

 Port of Spain (Thaxter). 



14. Anochetus inermis Ern. Andre var. meinerti Forel. ^ 9 cf . — 

 Chaguanas (Urich); Port of Spain (Thaxter). 



The worker and female of this variety differ from those of the 

 typical form in having the superior border of the petiole distinctly 

 excised and the inner border of the mandibles with three teeth. 



