berg: formícidos argentinos, chilenos y uruguayos 43 



SuMicnRAST, F., Notes 011 tlie liabits of cerlain spccies of Mexican 

 Hjmenoptora preseiUed to llio. American Entomologicol 

 Sociely. JX" I. Un llie liabils of ihe Mexican spccies oí" iho 

 genus Ecilon Latr. — Transaclions of the American Ento- 

 mológica! Socicty. Vol. 11, p. 39. Pliiladel|)li¡a, l«G8. 



Westwood, J. o., Characters of nevv Genera and Specics of Hyme- 

 iioplerous Insecls. — Proceedings of the Zoológica! Societj 

 of Lon(!()n. Parí iii, p. 51 and G8. London, 1835. 

 — Observalions on the Genus Ty|)!i!opone with descriptions 

 of severa! exotic species of Ants. — Annals and Magazin 

 of Natural History. Vul. vi, p. 81. í.ondon, 18il. 



WooD, WiLLiAM, Illustralions of the Linnean Genera of Insects. 

 Tome II. London, 1821. 



Zetterstedt, J. W., Insecta Lapponica descripta. Lipsiae, 1840. 



Buenos Aires, Enero de 1890. 



